Christopher OBrien

This does make it extremely hard to play, as switching items is unpredictable (at best). I am running under macOS, 10.13.6

I'd like to note (and unsure whether related or not) that the scrolling doesn't work at all while holding shift. That is, I cannot change hotbar inventory anymore while crouching.

Easier reproducer on OSX: Command-Tab to switch to a different window. When you switch back to the Minecraft window any keystrokes behave as if the Command key were still depressed (thus V behaves like Command-V, backspace like Command-backspace, etc).

Workaround on OSX: If you tap Command once or twice the problem corrects and keystrokes behave normally.

Perhaps check for the state of modifiers when the Minecraft window regains focus? Normally I'd be happy to submit a patch but...