Using SinglePar does not majke sense here since the paragraph is not
modified and it might even not have a position yet.
This fixes a crash in BufferView::singleParUpdate, which is not
prepared (yet) to such situations.
bvcur.setCurrentFont();
if (cur.top() == old) {
// We didn't move one iota, so no need to update the screen.
- cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
+ cur.screenUpdateFlags(Update::FitCursor);
//cur.noScreenUpdate();
return;
}