To get out of stuck SHIFT KEY hp prime emulator on Mac

[jte]

I’ve noticed something like this in the past (and would describe it much as it was described here). I’ve created a related ticket on the bug tracker I’ve set up for the project.

The sequence of actions I found that can recreate an interaction like this is to release the ⌘ key (on the Mac keyboard) while the focus is not on the HP Prime application. An example sequence is as follows:
1. press and hold ⌘,
2. switch applications while ⌘ is held down (e.g., by using tab, or by clicking on an app in the dock)
3. release ⌘, (while in another application) and then
4. click on virtual keys in the HP Prime application — it now acts as though Shift is down even though ⌘ is not pressed and the ↑S indicator is not showing in the virtual HP Prime’s title bar.

However, the Shift key is still being drawn in a pressed state. (So there is some visual indication.) Clicking on it does not release it, but pressing and releasing ⌘ does.

I thought I’d write here to ask if there is another issue / sequence of interactions that lead to similar issues. (/ If an interaction can lead to the interface acting as though Shift is pressed without the Shift key being drawn in a pressed state.) (This can be recreated on the Windows version, but with the Ctrl key instead of the ⌘ key. I’ve also created a ticket suggesting that the ⌘ key not be used to control the virtual Shift key on macOS as Ctrl is a better choice on Macs for that.)