learn-markdown breaks GitHub Copilot tab-completion

[jkoritzinsky]

Type: Bug

When I get GitHub Copilot suggestions (or suggestions from other extensions), I can't tab complete the suggestions. When pressing Tab, a tab character is emitted instead of the suggested completion. Disabling the learn-markdown extension fixes tab-completion.

Extension version: 1.0.1 VS Code version: Code 1.79.2 (695af097c7bd098fbf017ce3ac85e09bbc5dda06, 2023-06-14T08:57:04.379Z) OS version: Windows_NT x64 10.0.22621 Modes:

System Info

|Item|Value| |---|---| |CPUs|Intel(R) Xeon(R) W-2235 CPU @ 3.80GHz (12 x 3792)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: disabled_off
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled| |Load (avg)|undefined| |Memory (System)|63.59GB (26.65GB free)| |Process Argv|. --crash-reporter-id bd57884a-402c-49ef-ac40-f268ff95755d| |Screen Reader|no| |VM|0%|

A/B Experiments

``` vsliv368:30146709 vsreu685:30147344 python383:30185418 vspor879:30202332 vspor708:30202333 vspor363:30204092 vslsvsres303:30308271 vserr242:30382549 pythontb:30283811 vsjup518:30340749 pythonptprofiler:30281270 vshan820:30294714 vstes263:30335439 vscod805cf:30301675 binariesv615:30325510 bridge0708:30335490 bridge0723:30353136 vsaa593cf:30376535 pythonvs932:30410667 py29gd2263:30776702 vsclangdf:30486550 c4g48928:30535728 dsvsc012cf:30540253 pynewext54:30695312 azure-dev_surveyone:30548225 3biah626:30602489 pyind779:30671433 89544117:30613380 pythonsymbol12:30671437 showlangstatbar:30737416 vsctsb:30748421 pythonms35:30701012 a2ce3375:30757347 pythonfmttext:30731395 pythoncmvfstrcf:30756944 fixshowwlkth:30771522 hideindicator:30766889 pythongtdpath:30769146 bgfeh915:30769767 e440d664:30776459 pythonidxptcf:30772540 pythondjangots:30772535 pythonnocebcf:30776496 ```