Display problems with Safari 17.4.1

Questions
1

Since updating to Safari 17.4.1 on macOS 14.4.1 (Sonoma), I have problems in Servoy applications with displaying forms. It seems mainly with forms based on a Split Pane. Pulling the Browser window a bit bigger or smaller solves the problem, i. e. shows the forms content.
This has occurred primarily on NG1, seldom on NG2.

Our forms are loaded on a main form with following code:

		elements.splitPaneMain.setLeftForm(selectionForm);
		elements.splitPaneMain.setRightForm(detailForm);

Any one noticed the same behaviour?
It doesn’t matter whether the server runs on Windows or macOS.

Regards,