When you touch this checkbox (a Upp::RichObjectType) , you will see this
It is now very difficult to use it in a suitable form. (set it or unset it)
So it was our requirement to disable this Resize feature.
Our result looks like this:
And if you want to resize this checkbox:
to save this object-setting to qtf:
@@format:cx&cy keep aspect ratio and resize
@@format:cx|cy keepratio and noresize
@@format:cx*cy no keepratio and resize
@@format:cx#cy no keepratio and noresize
and here our patchfiles for this feature current release 2015.2 (rev 9251):