This is a regression against 6.7.

With 6.8, emitting dataChanged on indexes does not cause the view to refresh.

I have attached a small program to test this.

The steps to reproduce are:

• run the example
• scroll a bit down
• click the button (most of the time it works there)
• scroll again a bit down
• click the button

The data is not refreshed unless you change the current row or scroll again.

I just did a bisect and it is caused by 

2f9c72028d2481f587f378a256654d0a362e3d44 (QTreeView: optimize Private::intersectedRect())

authored by chehrlic