in previously unselected textboxes in impress

started happening after...

commit 16c7f891
Date:   Tue Jan 12 16:36:49 2016 +0000

    tdf#97075 - don't render sdr overlays before we paint

in impress instead flush the overlay after activating the edit object
if we go on to put the cursor in there. Seems to work.

Change-Id: Ib746c36d1074aee09771a3dc1d69834ce80a9c08