Moving a selection results in heavy clipping artifacts until the movement stops

[Antonio Salazar]

Reproducing this is relatively simple:
1. Write a few lines of text on a blank page.
2. Select some relatively small rectangle of the text.
3. Start dragging it around.
Noticeable clipping occurs during the movement. It is possible that this clipping is a result of the many individual items that may be moved as part of the selection move operation.

[Antonio Salazar (shadowfiend)]

It looks like this has largely been fixed in Qt4.4, so it was probably a Qt issue (repaints were a known problem in Qt 4.3). Marking it as invalid. Will reopen if it resurfaces.