I would like to use overlays for showing validation errors on components. For usual components like TextFields, ComboBoxes everything is fine. However the DateComboBox does not seem to support that since its editor usually overlaps the overlay when the cursor is in the same area.
And this look very ugly

Does anyone know a simple way to solve this issue?
I thought of replacing the editor of the DateComboBox and override the editor component's paint method, but that does not seem to be a trivial solution considering that all that code is not open source...

Best regards
Gabor