Recently I found out, that something globally intercepts keyboard shortcut ctrl+shift+U.In most text edit apps, this shortcut is used to toggle upper/lower case. But now, no matter where I use this shortcut, it just inserts underscored "u" as symbol for some special character.I've checked settings->keyboard->keyboard shortcuts and no action has this shortcut.
As I said this shortcut works everywhere, overriding this shortcut in all apps, so it looks like system related setting.
Is there anyway to check where it is assigned, to what, and remove it? I use this shortcut a lot in InteliJ and Notepad++, and it gets me furious when I cannot use it.
Already replying to answers "reinstall system": installing and configuring whole environment I use for work will take a week, that is not accaptable.
