I created a new layout, without entering any specific printer. So the Layout Properties popup window shows “none” for the printer and “custom” for the (paper)size. Changed this to my Brother printer and A4 paper size and clicked OK. No visible change to the layout, but deliberately choosing a “wrong” size (A5) shows that the layout updates.
Opened the properties window again, printer setting reverted to none and custom. The layout size is not affected at this point. Closed and saved the design file and reopened it, the layout is back to the default size and, not surprisingly by now, the printer settings are none and custom again.
Is there another way to save the layout sizes? Or set as a default at least?