Alt key sticks even after app loses focus (JDK-8090647)

[Pedro Duque Vieira]

Hi,

I'm developing an application for a customer and it seems like we've been
hit by: JDK-8090647 <https://bugs.openjdk.org/browse/JDK-8090647> (?)

Steps:

1 - press alt + tab to switch to another app
2 - press alt + tab again to switch to javafx app again
3 - type a key with an associated "mnemonic action" in the javafx app (no
alt key being pressed)

4 - "mnemonic action" gets triggered even though it shouldn't

So the problem is that the alt seems to "stick" after the javafx app loses
and regains focus (through alt + tab) .


I've tested this under Windows 10 and Windows 11.

This is problematic to us since our users often use the keyboard to
interact with our app and the previous version of our app (built in a
different language than Java) didn't have this problem.

--
Pedro Duque Vieira - https://www.pixelduke.com
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