Hiding container tabs that use file on the system is not functioning properly

Step to produce: -Drag any file from your computer to a container tab (I have tried pdf and jpg) -Hide the container tabs -showing container tabs does not restart the tab of the file.

about:support: { "application": { "name": "Firefox", "osVersion": "Darwin 16.7.0", "version": "56.0", "buildID": "20170926190823", "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:56.0) Gecko/20100101 Firefox/56.0", "safeMode": false, "updateChannel": "release", "supportURL": "https://support.mozilla.org/1/firefox/56.0/Darwin/en-US/", "numTotalWindows": 1, "numRemoteWindows": 0, "remoteAutoStart": false, "currentContentProcesses": 0, "maxContentProcesses": 1, "autoStartStatus": 7, "styloBuild": true, "styloDefault": false, "styloResult": false, "keyGoogleFound": true, "keyMozillaFound": true }, "modifiedPreferences": { "accessibility.typeaheadfind.flashBar": 0, "browser.cache.disk.filesystem_reported": 1, "browser.cache.disk.hashstats_reported": 1, "browser.cache.disk.smart_size.first_run": false, "browser.cache.frecency_experiment": 3, "browser.cache.disk.smart_size.use_old_max": false, "browser.cache.disk.capacity": 358400, "browser.download.manager.alertOnEXEOpen": true, "browser.places.smartBookmarksVersion": 8, "browser.sessionstore.upgradeBackup.latestBuildID": "20170926190823", "browser.startup.homepage_override.mstone": "56.0", "browser.startup.homepage": "about:home", "browser.startup.homepage_override.buildID": "20170926190823", "browser.tabs.warnOnClose": false, "browser.tabs.remote.autostart.2": true, "browser.urlbar.lastSuggestionsPromptDate": 20170827, "browser.urlbar.timesBeforeHidingSuggestionsHint": 0, "browser.urlbar.daysBeforeHidingSuggestionsPrompt": 0, "dom.apps.lastUpdate.buildID": "20161019084923", "dom.push.userAgentID": "1fb5845c780247f88d847727d03d8e3d", "dom.apps.reset-permissions": true, "dom.apps.lastUpdate.mstone": "49.0.2", "extensions.lastAppVersion": "56.0", "font.internaluseonly.changed": true, "media.webrtc.debug.log_file": "/private/var/folders/3m/3gq7_k6s0xz3vmc21cwc8pph0000gn/T/TemporaryItems/WebRTC.log", "media.benchmark.vp9.versioncheck": 2, "media.gmp-widevinecdm.lastUpdate": 1507329571, "media.gmp-gmpopenh264.lastUpdate": 1493129052, "media.gmp-gmpopenh264.abi": "x86_64-gcc3", "media.gmp-manager.lastCheck": 1507329965, "media.gmp-widevinecdm.abi": "x86_64-gcc3", "media.gmp-widevinecdm.version": "1.4.8.1008", "media.gmp.storage.version.observed": 1, "media.benchmark.vp9.fps": 122, "media.gmp-gmpopenh264.version": "1.6", "media.gmp-manager.buildID": "20170926190823", "network.prefetch-next": false, "network.dns.disablePrefetch": true, "network.http.speculative-parallel-limit": 0, "network.predictor.enabled": false, "network.predictor.cleaned-up": true, "network.cookie.prefsMigrated": true, "places.history.expiration.transient_current_max_pages": 108849, "places.database.lastMaintenance": 1506782823, "plugin.importedState": true, "plugin.disable_full_page_plugin_for_types": "application/pdf", "plugins.ctprollout.cohortSample": "0.882355", "plugins.ctprollout.cohort": "test", "print.printer_HP_LaserJet_P2035.print_orientation": 0, "print.printer_HP_LaserJet_P2035.print_margin_right": "0.5", "print.printer_HP_LaserJet_P2035.print_edge_top": 0, "print.print_paper_width": " 8.50", "print.print_to_file": false, "print.printer_HP_LaserJet_P2035.print_footerright": "&D", "print.print_margin_top": "0.5", "print.printer_HP_LaserJet_P2035.print_unwriteable_margin_right": 25, "print.printer_HP_LaserJet_P2035.print_resolution": 53746976, "print.printer_HP_LaserJet_P2035.print_headerright": "&U", "print.print_reversed": false, "print.print_orientation": 0, "print.printer_HP_LaserJet_P2035.print_edge_right": 0, "print.printer_HP_LaserJet_P2035.print_margin_top": "0.5", "print.printer_HP_LaserJet_P2035.print_paper_size_unit": 0, "print.print_paper_height": " 11.00", "print.print_scaling": " 1.00", "print.printer_HP_LaserJet_P2035.print_margin_bottom": "0.5", "print.printer_HP_LaserJet_P2035.print_paper_width": " 8.50", "print.printer_HP_LaserJet_P2035.print_footerleft": "&PT", "print.print_unwriteable_margin_right": 25, "print.printer_HP_LaserJet_P2035.print_oddpages": true, "print.printer_HP_LaserJet_P2035.print_headercenter": "", "print.print_unwriteable_margin_left": 25, "print.printer_HP_LaserJet_P2035.print_evenpages": true, "print.printer_HP_LaserJet_P2035.print_to_file": false, "print.printer_HP_LaserJet_P2035.print_unwriteable_margin_bottom": 57, "print.printer_HP_LaserJet_P2035.print_margin_left": "0.5", "print.printer_HP_LaserJet_P2035.print_shrink_to_fit": true, "print.printer_HP_LaserJet_P2035.print_duplex": 0, "print.print_paper_size_unit": 0, "print.print_unwriteable_margin_bottom": 20, "print.print_paper_name": "", "print.print_margin_right": "0.5", "print.printer_HP_LaserJet_P2035.print_headerleft": "&T", "print.printer_HP_LaserJet_P2035.print_paper_height": " 11.00", "print.print_paper_data": 0, "print.print_oddpages": true, "print.printer_HP_LaserJet_P2035.print_scaling": " 1.00", "print.print_bgcolor": false, "print.printer_HP_LaserJet_P2035.print_page_delay": 50, "print.print_bgimages": false, "print.print_margin_left": "0.5", "print.print_duplex": 71303424, "print.printer_HP_LaserJet_P2035.print_footercenter": "", "print.printer_HP_LaserJet_P2035.print_paper_name": "", "print.print_evenpages": true, "print.print_margin_bottom": "0.5", "print.printer_HP_LaserJet_P2035.print_paper_data": 0, "print.printer_HP_LaserJet_P2035.print_in_color": true, "print.printer_HP_LaserJet_P2035.print_reversed": false, "print.printer_HP_LaserJet_P2035.print_unwriteable_margin_top": 25, "print.print_shrink_to_fit": true, "print.print_unwriteable_margin_top": 20, "print.printer_HP_LaserJet_P2035.print_edge_bottom": 0, "print.printer_HP_LaserJet_P2035.print_unwriteable_margin_left": 25, "print.print_in_color": true, "print.print_page_delay": 50, "print.printer_HP_LaserJet_P2035.print_bgcolor": false, "print.printer_HP_LaserJet_P2035.print_edge_left": 0, "print.printer_HP_LaserJet_P2035.print_bgimages": false, "print.print_resolution": 0, "privacy.cpd.siteSettings": true, "privacy.userContext.ui.enabled": true, "privacy.sanitize.timeSpan": 2, "privacy.usercontext.about_newtab_segregation.enabled": true, "privacy.userContext.enabled": true, "privacy.userContext.longPressBehavior": 2, "privacy.cpd.offlineApps": true, "security.sandbox.content.tempDirSuffix": "{0e4085df-f111-a340-b84c-7161eb71b8b4}", "services.sync.declinedEngines": "", "storage.vacuum.last.index": 1, "storage.vacuum.last.places.sqlite": 1506176488 }, "lockedPreferences": {}, "media": { "currentAudioBackend": "audiounit", "currentMaxAudioChannels": 2, "currentPreferredChannelLayout": "stereo", "currentPreferredSampleRate": 44100, "audioOutputDevices": [ { "name": "Internal Speakers", "groupId": "AppleHDAEngineOutput:1B,0,1,1:0", "vendor": "Apple Inc.", "type": 2, "state": 2, "preferred": 15, "supportedFormat": 12336, "defaultFormat": 4096, "maxChannels": 2, "defaultRate": 44100, "maxRate": 96000, "minRate": 44100, "maxLatency": 4861, "minLatency": 779 } ], "audioInputDevices": [ { "name": "Internal Microphone", "groupId": "AppleHDAEngineInput:1B,0,1,0:1", "vendor": "Apple Inc.", "type": 1, "state": 2, "preferred": 15, "supportedFormat": 12336, "defaultFormat": 4096, "maxChannels": 2, "defaultRate": 44100, "maxRate": 96000, "minRate": 44100, "maxLatency": 4162, "minLatency": 80 } ] }, "javaScript": { "incrementalGCEnabled": true }, "accessibility": { "isActive": false, "forceDisabled": 0, "handlerUsed": false }, "libraryVersions": { "NSPR": { "minVersion": "4.16", "version": "4.16" }, "NSS": { "minVersion": "3.32.1", "version": "3.32.1" }, "NSSUTIL": { "minVersion": "3.32.1", "version": "3.32.1" }, "NSSSSL": { "minVersion": "3.32.1", "version": "3.32.1" }, "NSSSMIME": { "minVersion": "3.32.1", "version": "3.32.1" } }, "userJS": { "exists": false }, "crashes": { "submitted": [], "pending": 0 }, "sandbox": { "contentSandboxLevel": 3, "effectiveContentSandboxLevel": 3 }, "graphics": { "numTotalWindows": 1, "numAcceleratedWindows": 1, "windowLayerManagerType": "OpenGL", "windowLayerManagerRemote": true, "windowUsingAdvancedLayers": false, "adapterDescription": "", "adapterVendorID": "0x8086", "adapterDeviceID": "0x162b", "adapterRAM": "", "adapterDrivers": "", "driverVersion": "", "driverDate": "", "webgl1Renderer": "Intel Inc. -- Intel(R) Iris(TM) Graphics 6100", "webgl1Version": "2.1 INTEL-10.25.17", "webgl1DriverExtensions": "GL_ARB_color_buffer_float GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_instanced_arrays GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_provoking_vertex GL_ARB_seamless_cube_map GL_ARB_shader_objects GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shadow GL_ARB_sync GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_mirrored_repeat GL_ARB_texture_non_power_of_two GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_transpose_matrix GL_ARB_vertex_array_bgra GL_ARB_vertex_blend GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_window_pos GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_clip_volume_hint GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_draw_buffers2 GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 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GL_APPLE_vertex_array_object GL_APPLE_vertex_array_range GL_APPLE_vertex_point_size GL_APPLE_vertex_program_evaluators GL_APPLE_ycbcr_422 GL_ATI_separate_stencil GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_ATI_texture_mirror_once GL_IBM_rasterpos_clip GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_fog_distance GL_NV_light_max_exponent GL_NV_texgen_reflection GL_NV_texture_barrier GL_SGIS_generate_mipmap GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod ", "webgl1Extensions": "ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc MOZ_WEBGL_depth_texture", "webgl1WSIInfo": "CGL", "webgl2Renderer": "Intel Inc. -- Intel(R) Iris(TM) Graphics 6100", "webgl2Version": "4.1 INTEL-10.25.17", "webgl2DriverExtensions": "GL_ARB_blend_func_extended GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_ES2_compatibility GL_ARB_explicit_attrib_location GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader5 GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_occlusion_query2 GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_subroutine GL_ARB_shading_language_include GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_texture_storage GL_ARB_texture_swizzle GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit 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"description": "Compositing", "status": "available", "log": [ { "type": "default", "status": "available" } ] }, { "name": "OPENGL_COMPOSITING", "description": "OpenGL Compositing", "status": "available", "log": [ { "type": "default", "status": "available" } ] }, { "name": "WEBRENDER", "description": "WebRender", "status": "unavailable", "log": [ { "type": "default", "status": "opt-in", "message": "WebRender is an opt-in feature" }, { "type": "runtime", "status": "unavailable", "message": "Build doesn't include WebRender" } ] } ], "fallbacks": [] }, "crashGuards": [] }, "experiments": [], "extensions": [ { "name": "Multi-Account Containers", "version": "4.0.3", "isActive": true, "id": "@testpilot-containers" }, { "name": "To Google Translate", "version": "2.2", "isActive": true, "id": "jid1-93WyvpgvxzGATw@jetpack" }, { "name": "uBlock Origin", "version": "1.14.10", "isActive": true, "id": "uBlock0@raymondhill.net" }, { "name": "Web Paint", "version": "1.2.6", "isActive": true, "id": "jid1-0dhOSYKGj326og@jetpack" } ], "features": [ { "name": "Activity Stream", "version": "0.0.0", "id": "activity-stream@mozilla.org" }, { "name": "Application Update Service Helper", "version": "2.0", "id": "aushelper@mozilla.org" }, { "name": "Click-to-Play staged rollout", "version": "1.4", "id": "clicktoplay-rollout@mozilla.org" }, { "name": "Firefox Screenshots", "version": "10.12.0", "id": "screenshots@mozilla.org" }, { "name": "Follow-on Search Telemetry", "version": "0.9.3", "id": "followonsearch@mozilla.com" }, { "name": "Form Autofill", "version": "1.0", "id": "formautofill@mozilla.org" }, { "name": "Multi-process staged rollout", "version": "3.00", "id": "e10srollout@mozilla.org" }, { "name": "Photon onboarding", "version": "0.1", "id": "onboarding@mozilla.org" }, { "name": "Pocket", "version": "1.0.5", "id": "firefox@getpocket.com" }, { "name": "Shield Recipe Client", "version": "65", "id": "shield-recipe-client@mozilla.org" }, { "name": "Web Compat", "version": "1.1", "id": "webcompat@mozilla.org" } ] }

┆Issue is synchronized with this Jira Task

mozilla / multi-account-containers

Hiding container tabs that use file on the system is not functioning properly #898

`file:///⋯`