1. Add big amount (2000) of items to itemview
2. Select All
3. Change column sorting order pressing from header section
4. Try to resize column from header section
-> column is resized but with extreme long delay
Reason for the delay is investigated to the next lines:
Replacing above loop with the following code boosts up issue to invisible. But don't know side-effects if joined/range items are not checked.
Attached treewidgetdelay.zip contains full small application to reproduce the issue.
|For Gerrit Dashboard: QTBUG-33954|
|89939,4||QItemSelectionModel: Sort persistent model indexes taking parent into account.||dev||qt/qtbase||Status: MERGED||+2||0|