I discovered 2 issues in the webclient:
1. For a Servoy 5.2.2 (webclient) solution, I made a -navigation- form using solutionModel.
The buttons are set based upon table data.
For some unknown reason the labels are displayed in IE and Safari for Windows strangely like this:
Which should be more like this:
2. The other problem in IE and Safari for Windows is that a form added to a tabpanel is not displayed immediatly. Only when the user press the browser's Refresh button makes the form appear in the tabpanel.
In smartclient, and in FireFox and Chrome (Mac & Win) the buttons, and add tabpanel forms, behaves correctly.
I created a case (325196) and included a sample solution.