TextEditor drawing issues

[RolandMR]

I think TextEditor::parentHeirarchyChanged() should call setOpaque (findColour (backgroundColourId).isOpaque());

Otherwise what you add a TextEditor to a component that has a look and feel where TextEditor background is transparent, there will be drawing artifacts.

[fr810]

OK I think I fixed this on develop. Please check!

… I’m also happy to see that I’m not the only one who has a dyslexic typing dis-order when it comes to the word “hierarchy”