Bug: typing really fast makes some characters overwrite themselves

[VerMishelb]

Sometimes when several keys are pressed quickly they overwrite the same symbol, or even put the same symbol to both the first and the second column. This is very noticeable when I type out the line number to put it as a listing in some document. For example, pressing keys "0", "1" in that order might result in either 1 that immediately changes to 0, or in 1 with zero being omitted completely, and it also seems to result in reverse order 10 being typed with higher probability (also automatically moving the cursor one column before, too?), though I'm sure I typed them as 01, and insert mode confirms that. I tried to put my fingers together in a way that "l" in "lk" is pressed before "k" and typed the same sequence in overwrite mode and insert mode. All sequences are supposed to be 40 characters long.

// Empty line, overwrite
kklkkkkklklklklklklklkkkklklklk
// Insert mode
lklklklklklklklklklklklklklklklklklklklk
// Spaces, overwrite
kkklkkkkkkkkkkkkkkkkk                                      

I know it looks like I'm just dumb and type them too fast so they are typed backwards but insert mode seems to prove the opposite.

[nachocab]

@VerMishelb You're not crazy. I ran into the same issue: microsoft/vscode#180817

[NurudinImsirovic]

I think certain features of the VS Code editor are fighting over the extension.

I'm not that knowledgeable with VS Code extensions to go in myself and try to fix the issue but I think certain flags should be force-disabled by the extension while in Overwrite mode. What those flags are? I don't know.

This issue is very much prevalent when typing in syntax-highlighted code, or if typing over special characters ~!@#$%^&*()_+... etc.

Additionally I don't use any Extensions other than Overtype, with many built-in extensions outright disabled so I know that other extensions are not affecting this behavior.