ADDITIONAL SYSTEM INFORMATION :
macOS 12.3 OpenJDK 17.0.2 JFX 18.0.1

A DESCRIPTION OF THE PROBLEM :
I think a look needs to be taken at the fix to https://bugs.openjdk.java.net/browse/JDK-8269639 the popup always animates to screen origin as the fix does not check for bounds. This only affects macOS.

The commit is here https://github.com/openjdk/jfx/commit/1814991f2dc919399d1abf0bb504986f6e84a46e


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
App stage has a modal popup activated by a button. Click button, then the popup animates to screen origin.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Popup centred on Stage.
ACTUAL -
Popup displays and then animates to screen origin.

CUSTOMER SUBMITTED WORKAROUND :
Revert to JFX 17.0.2

FREQUENCY : always