I have recently changed a tab widget from ATTACH=BOTTOM,RIGHT to ATTACH=VSIZE,RIGHT, so as to remove the need for a splitbar. 

However, if we use the elipses (...) to load the properties form, on exit, it removes the VSIZE, and will therefore quietly break our component. It has been some extended time now that the VSIZE etc has worked in the properties for a field, can UF please fix the properties form to at the very least not silently change the behaviour of the form. 

Regards, 

Iain