odd, never really had a problem with it, of all the vim emulations I've found it to be one of the best. It's not fully featured, but none of them are.

I also use vscode-vim.

My biggest complaint is that Shift+V and selecting lines will sometimes jump to completely random spots in my file. It makes it unusuable sometimes.

in what Jetbrains product? I use Visual Lines all the time in webstorm, rider, and clion for multiple purposes

possibly some other keybinding is getting accidently triggered somehow..

IntelliJ ultimate! It's the default config so idk! It happens quite a bit when editing twirl templates (scala mvc), so maybe it's that.