The sub-Region does not have a Style, but still shows a border, which is assigned to the parent Region.
This happens to Labels and possibly other Controls as well -
This is working as designed.If you would like the Sub-region to have a different style than its Parent region you can apply a different style to the sub-region.
This is working as designed.
If you would like the Sub-region to have a different style than its Parent region you can apply a different style to the sub-region.