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Text colors in editor sometimes randomly change when scrolling

Open bwarren18 opened this issue 4 years ago • 8 comments

Issue Description

When editing code in an editor window, on very rare occasions, the text coloring that is based on the code content type will randomly change as you scroll down the page. To demonstrate the effect I created a bunch of comment lines between my code.

image

Other notes: The Minimap shows the same coloring. There also appears to be 'ghost' characters in it. The formatting is preserved if copied and pasted into another program, a new message in Outlook for example. Closing and re-opening VSC fixes the issue.

Another person reported the same issue before and it was closed and suggested to be moved here: https://github.com/microsoft/vscode/issues/120800

Environment Information

Visual Studio Code

Name Version
Operating System Windows_NT x64 10.0.19042
VSCode 1.55.2
PowerShell Extension Version 2021.2.2

PowerShell Information

Name Value
PSVersion 5.1.19041.906
PSEdition Desktop
PSCompatibleVersions 1.0 2.0 3.0 4.0 5.0 5.1.19041.906
BuildVersion 10.0.19041.906
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

Visual Studio Code Extensions

Visual Studio Code Extensions(Click to Expand)
Extension Author Version
azurerm-vscode-tools msazurermtools 0.15.0
Bookmarks alefragnani 13.0.4
powershell ms-vscode 2021.2.2
vscode-dotnet-runtime ms-dotnettools 1.0.0

bwarren18 avatar Apr 14 '21 12:04 bwarren18

Thanks @bwarren18 we have seen this issue at times as well-- but it is a bit of a tricky one that will take resources to debug--thanks!

SydneyhSmith avatar Apr 20 '21 20:04 SydneyhSmith

Thanks @SydneyhSmith, let me know if there is anything I can do to collect more debug information for this.

bwarren18 avatar Apr 23 '21 15:04 bwarren18

@bwarren18 Does this only happen when semantic highlighting is enabled?

andyleejordan avatar May 25 '21 17:05 andyleejordan

@andschwa Yes. If Semantic Highlighting is set to false it looks fine; the bug reappears if set to true again.

bwarren18 avatar May 25 '21 20:05 bwarren18

Helpful to know, thank you!

andyleejordan avatar May 26 '21 20:05 andyleejordan

I wish I knew a way to consistently reproduce the issue.
It seems to happen when a file is left open in VS code for a while.
Let me know if there is any thing you would like me to check when it happens again. Thanks.

bwarren18 avatar May 27 '21 15:05 bwarren18

I've seen it occasionally, we have a whole project planned to address the semantic highlighting issues. It was helpful to be able to categorize this. I'm contemplating disabling semantic highlighting by default until we have it working better.

andyleejordan avatar May 27 '21 16:05 andyleejordan

OMG it's a horrible feature! I hate it so much!

For others who struggle with it, just set config to:

"editor.semanticHighlighting.enabled": false,

shelby-carter avatar Jun 24 '24 00:06 shelby-carter