Fix Java 11 incompatibilities inside PSurfaceFX #5286
Description
Several methods that we're using are no longer available in JavaFX:
Screenclass:getRenderScale(),getUIScale()KeyCodeclass:impl_getChar()andimpl_getCode()
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Several methods that we're using are no longer available in JavaFX:
Screen class: getRenderScale(), getUIScale()KeyCode class: impl_getChar() and impl_getCode()