Upgrade to 3.3.6 has major problems

Sourcetree was working really well until I upgraded to 3.3.6 for Windows yesterday and now there are major issues with the interface:

1. The labels on the tabs has changed to the base folder name (this had been previously fixed);
2. When you click on a branch, nothing happens; you have to change tab, then come back to see the focus move to the selected node;
3. When you select changes to commit, nothing happens;  you have to change tab, then come back to see the selected changes move to the top window.