8.25 - GridHandler as Tab on Document Forms Display Issue

hello, since 8.25 there is some strange bug with the registers/folders/tabs on Document Form, where we have added GridHandler as additional Tab. it does work, but while browsing and navigating forward or backwards thru Documents, with each Step ALL Registers (logistics, account, etc, and our custom too) shrink in width, smaller and smaller until you cannont read or click them. just a little resizing of the form resets their width to default and usable, then they begin to shrink again.
can anyone confirm this issue with that addon version?