Accent marks rendered incorrectly on large files

[nachocab]

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

• VS Code Version: Version: 1.77.3
  Commit: 704ed70
  Date: 2023-04-12T09:19:37.325Z
  Electron: 19.1.11
  Chromium: 102.0.5005.196
  Node.js: 16.14.2
  V8: 10.2.154.26-electron.0
  OS: Darwin x64 22.4.0
  Sandboxed: Yes

• OS Version: macOS Ventura 13.3.1 (22E261)

Steps to Reproduce:

1. I just noticed that on a file with around 300K characters, typing accented characters (ie: á é í) becomes sluggish and leads to some characters getting lost.

For example, when typing 'q', 'u', 'é' in quick succession, it sometimes gets rendered as 'qé´' (two accent marks, the 'u' gets lost). See attached gif (you can see at the end the difference between typing it slowly and typing it fast):

I've disabled all my extensions and the issue still happens. I've tried it in an empty text file and it does not happen there.

Note: I'm using a Spanish keyboard, which has the option of typing a dead key for the acute accent mark.

[nachocab]

Never mind. I had disabled all extensions, but I also needed to restart. After restarting, the issue went away, so I bisected extensions until I realized it was due to the Overtype extension. Disabling it fixed the problem.