The problem occurred after the upgrade from 1.x to 2.0.20.1
I switch to another branch.
But visually, always is active 'master' branch in the tree and the list of all branches.

When I go to the 'master' branch, the context menu is disasbled. You can only go through a click in the tree.
Also, the inscription "uncommitted changes" is constantly displayed. But there are no changes.

What can be done with this problem?