Frames with border radius preset have this radius reset when their backcolor is changed
If you setup a Frame element with a border radius his radius is removed if you dynamically change the backcolor during app execution.
I won't patronise with a code example for this one, needless to say I have frames that change color dynamically to indicate the importance of the text in an interior label. When the change occurs the border radius is removed. Attempting to re-apply the border radius (during the color change) does not work.
Conversely on the same screen I have another frame with a border radius, but the backcolor of that one is not changed during execution, and thus the border radius is retained throughout.