I search the site but no mention of it so I though to share it here.
After moving from 1.25 to 1.26 I noticed sudden change in behavior.
My app uses a lot of List Boxs and the contect gets updated a lot.
So I use updateContent to signal that data needs to be redrawn.
While this did work form 1.23 to 1.25, but it stopped in 1.26.
I also noticed that only if a row is selected, then there is a call to paintListBoxItem for that row only.
I think this is a small bug that is introuduced after redraw improvments are implemented.
By the way, release version now draws much faster (it is getting better with each revision) .