Mouse flickers on border of certain buttons

[celynw]

Type: Bug

I realise this is a very small visual bug, but reporting nonetheless!

Steps to Reproduce:

1. Make sure the window is focused
   • I can't seem to make this happen when another window is focused
2. Hover the mouse over exactly over the bottom border of certain buttons
   • Seems to only be the bottom border

This applies to some certain buttons across VSCode but not others. Some examples I found:

• Extensions sidebar, the Refresh and Views and More Actions...
• Output pane, the Clear Output, Turn Auto Scrolling Off, Set Log Level..., Views and More Actions..., but curiously NOT the Hide Panel button (could be a clue?)

https://github.com/microsoft/vscode/assets/3299161/fd4f2f38-6d4b-4363-9d0d-530ac1371406

Does this issue occur when all extensions are disabled?: Yes

VS Code version: Code 1.90.0 (89de5a8d4d6205e5b11647eb6a74844ca23d2573, 2024-06-04T19:43:07.605Z) OS version: Linux x64 6.5.0-1023-oem Modes:

System Info

|Item|Value| |---|---| |CPUs|Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 x 3400)| |GPU Status|2d_canvas: unavailable_software
canvas_oop_rasterization: disabled_off
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: disabled_software
multiple_raster_threads: enabled_on
opengl: disabled_off
rasterization: disabled_software
raw_draw: disabled_off_ok
skia_graphite: disabled_off
video_decode: disabled_software
video_encode: disabled_software
vulkan: disabled_off
webgl: unavailable_software
webgl2: unavailable_software
webgpu: disabled_off| |Load (avg)|2, 2, 2| |Memory (System)|15.46GB (6.29GB free)| |Process Argv|--disable-gpu --disable-extensions| |Screen Reader|no| |VM|0%| |DESKTOP_SESSION|i3| |XDG_CURRENT_DESKTOP|i3| |XDG_SESSION_DESKTOP|i3| |XDG_SESSION_TYPE|x11|

Extensions disabled

[roblourens]

I reproed this a couple times, then I reproed it in an older Stable so it's not a regression, then I added some logging and can't get it to happen again 😅

But I assign it to you @benibenj because I'm pretty sure it involves the hover. I think you can somehow get into a spot where the hover is appearing and disappearing really fast, when the mouse is in just the right spot. When it's flickering, you can just barely see the pointer arrow on the hover widget flickering below the cursor.

[ThomasDurand-EIM2]

I have found the same issue, not just with buttons, but also with the edge of the window title: