after setting the background to a semi-transparent color it's not possible to turn-off background painting completely: toggling the opaque property has no effect. See JXPanelVisualCheck.backgroundAlphaToggleOpaque.
I think it's necessary to allow configuring option to not paint the background (formerly: setting opaque to false). Maybe need another property, either for internal or external usage to differentiate the dont-paint from paint-non-opaque.
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Fix Version/s||1.6.5 [ 15917 ]|
|Resolution||Fixed [ 1 ]|