This whole thread sounds like the IME bug we will never fix because it’s an issue with Windows.
If you have a language enabled that will use the IME editor (using CJK), you can cause the IME to open in a race condition with our hotkey handler. The result is the IME does not open when Windows thinks it should and the application gets “locked up” because Windows stole the part of the event loop without giving it back. The only “fix” is to remove KiCad’s support for hotkeys. I also have an unholy fix but it’s inappropriate to put in code.