window is frozen with both Java extension and bracketPairColorization enabled

[Eskibear]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: both 1.61-stable and 1.62-insiders
• OS Version: windows 11

When both a) extension redhat.java is enabled and b) editor.bracketPairColorization.enabled is true, vscode window can be frozen after typing [ in some place, and meanwhile eating CPU and RAM.

Steps to Reproduce:
It's origininally reported in microsoft/vscode-java-pack#764 (comment) with detailed repro steps.

Note that, either disabling redhat.java or bracketPairColorization can work well.

I can also reproduce it by myself:

pairColorizationFreeze.mp4

Above video is recorded with:

Version: 1.62.0-insider (user setup)
Commit: 284e0db6c4cac1e557a43cd6691babdaafc2e1a9
Date: 2021-10-12T05:45:14.621Z
Electron: 13.5.1
Chrome: 91.0.4472.164
Node.js: 14.16.0
V8: 9.1.269.39-electron.0
OS: Windows_NT x64 10.0.22000

[alexdima]

Here are the encoded semantic tokens I see at runtime for this file:

// deltaLine, deltaCharacter, length, tokenTypeIndex, tokenModifierSet
0, 13, 16, 1, 80,
1, 2, 6, 11, 0,
0, 7, 6, 11, 0,
0, 15, 8, 7, 82,
0, 17, 1, 10, 16,
0, 7, 5, 10, 16,
1, 12, 8, 9, 16,
0, 19, 5, 10, 0,
0, 7, 1, 1, 0,
0, 4294967294, 5, 12, 0

FYI @Eskibear It looks like the last one is malformed, which ends up triggering a bug with us.

[Eskibear]

Thank you for your effort on this. I can reproduce that Java Language server is reporting a broken token 0, -2, 5, 12, 0, which should be fixed.