Pressing Alt+Caps Lock will sometimes break the keyup event for Caps Lock

[Susko3]

Alt+Caps Lock is the keyboard shortcut to switch to kana mode when using the Microsoft Japanese IME (on Windows).

When testing I used SDL_SetHint(SDL_HINT_EVENT_LOGGING, "2") and SDL_StartTextInput() (to actually make the IME work and respond to keyboard shortcuts).

Sample log output when the bug happens: (holdingAlt, and then tapping Caps Lock, then releasing Alt)

INFO: SDL EVENT: SDL_KEYDOWN (timestamp=10539 windowid=1 state=pressed repeat=false scancode=226 keycode=1073742050 mod=256)
INFO: SDL EVENT: SDL_KEYDOWN (timestamp=10768 windowid=1 state=pressed repeat=false scancode=57 keycode=1073741881 mod=8448)
INFO: SDL EVENT: SDL_KEYUP (timestamp=10853 windowid=1 state=released repeat=false scancode=226 keycode=1073742050 mod=8192)

When it works as expected:
(doesn't seem to break when holding Alt, then pressing Caps Lock, releasing Alt, and only then releasing Caps Lock)

INFO: SDL EVENT: SDL_KEYDOWN (timestamp=374722 windowid=1 state=pressed repeat=false scancode=226 keycode=1073742050 mod=8448)
INFO: SDL EVENT: SDL_KEYDOWN (timestamp=374853 windowid=1 state=pressed repeat=false scancode=57 keycode=1073741881 mod=256)
INFO: SDL EVENT: SDL_KEYUP (timestamp=375005 windowid=1 state=released repeat=false scancode=226 keycode=1073742050 mod=0)
INFO: SDL EVENT: SDL_KEYUP (timestamp=375216 windowid=1 state=released repeat=false scancode=57 keycode=1073741881 mod=0)

Other keyboard shortcuts include Shift+Caps Lock and Ctrl+Caps Lock, all changing the IME input mode in various way, all breaking the keyup event for Caps Lock.

[slouken]

SDL 2.0 is now in maintenance mode, and all inactive issues are being closed. If this issue is impacting you, please feel free to reopen it with additional information.