A DESCRIPTION OF THE PROBLEM :
There are two errors on Ubuntu, reported by one customer. I use OpenJDK Adoptium with OpenFX included.

- the dialog buttons does not have any text ( 'Cancel', 'Close', etc.)
- mouse flickering , probably caused by this error:

Use RDBMS: GoogleCloudSpanner
June 02, 2023 11:36:39 AM javafx.scene.CssStyleHelper calculateValue
WARNING: Could not resolve '-fx-text-background-color' while resolving lookups for '-fx-text-fill' from rule '*.label' in stylesheet jrt:/javafx.controls/com/sun/javafx/scene/control/skin/modena/modena.bss
June 02, 2023 11:36:39 AM javafx.scene.CssStyleHelper calculateValue
WARNING: Could not resolve '-fx-text-background-color' while resolving lookups for '-fx-text-fill' from rule '*.label' in stylesheet jrt:/javafx.controls/com/sun/javafx/scene/control/skin/modena/modena.bss