Syntax highlighting freezing after typing about dart-code HOT 3 CLOSED

I've seen this before, and then never been able to reproduce. My feeling is that either the server or VS Code are processing the request out of order with a modification, so the offsets are not applied correctly. What's odd is that some of the text seems too correct (for example Radius.circular above) for the entire request to be wrong.

How frequently do you see this? Do you have any feeling for what might contribute to it (like is it when the analysis server may be busy during initial analysis, or when you're typing quickly, or pasting large code chunks?). If I can repro it while capturing a log, it might be easier to narrow down.

from dart-code.

How frequently do you see this? Do you have any feeling for what might contribute to it (like is it when the analysis server may be busy during initial analysis, or when you're typing quickly, or pasting large code chunks?).

Multiple times per day. It happens beyond the initial analysis (if you mean like when VSCode starts up). I would say both, typing quickly and when pasting code in.

from dart-code.

By coincidence, I just saw this in the analysis server codebase. It looks to me like a VS Code bug, because if I open the "Inspect Tokens and Scopes" helper (a VS Code feature), it claims the text is the same colour in both positions of a multicolour word.

I've opened microsoft/vscode#211369 with some screenshots.

Will close this for now on the basis that it appears the bug is there, but we can re-open if the response indicates there might be something wrong here.

from dart-code.