We just found something.
It has got to do with the "HTML Doc Type" setting in the notes.ini.
The mentioned notes.ini setting is:
Dominocompletedoctype=1 (or 0)
If it is enabled (setting =1) then you get this:
As you can see the form is located on the bottom and all the Tabs for additional Meeting Options are on top of each other (they are being displayed but stacked on top of each other).
When the ini setting is disabled (=0) then you get this:
As you can see it is all fine at this point.
However the Problem is that we need the "doctype" setting for other applications to work correctly for IE and FIREFOX.
Maybe this helps a bit more to find a solution.
With kind regards