"Run Test | Debug Test" labels appear and disappear

[JEM-Mosig]

Issue Type: Bug

Whenever I write code inside a PyTest test function, the "Run Test | Debug Test" labels above the function disappear and appear again every few seconds, which makes it very hard to write or click on things, since the entire text is moved around.

Extension version: 2021.2.636928669
VS Code version: Code 1.54.1 (f30a9b73e8ffc278e71575118b6bf568f04587c8, 2021-03-04T22:38:31.419Z)
OS version: Windows_NT x64 10.0.19042
Remote OS version: Linux x64 5.4.72-microsoft-standard-WSL2
Remote OS version: Linux x64 5.4.72-microsoft-standard-WSL2

System Info

Item	Value
CPUs	AMD Ryzen Threadripper 1900X 8-Core Processor (16 x 3793)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	63.88GB (51.49GB free)
Process Argv	--crash-reporter-id fd36174b-fe3f-4ede-ba24-8108c090c434
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.4.72-microsoft-standard-WSL2
CPUs	AMD Ryzen Threadripper 1900X 8-Core Processor (16 x 3792)
Memory (System)	50.12GB (48.11GB free)
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.4.72-microsoft-standard-WSL2
CPUs	AMD Ryzen Threadripper 1900X 8-Core Processor (16 x 3792)
Memory (System)	50.12GB (48.11GB free)
VM	0%

A/B Experiments

vsliv368:30146709
vsreu685:30147344
python383:30185418
vspor879:30202332
vspor708:30202333
vspor363:30204092
vstry244:30256636
pythonvsdeb440:30248342
pythonvsded773:30248341
pythonvspyt875:30259475
dockersubset:30265998
pythontbcf:30265426
vspre833:30267464

[JEM-Mosig]

Here is an example:

test_layers.py.-.rasa.WSL_.Ubuntu.-.Visual.Studio.Code.2021-03-10.11-41-40.mp4

[karthiknadig]

Duplicate #2790