When I click the Push or Pull icon, the `remote branch to pull` dropdown or the `remote branch` column shows a spinner for about 8 seconds. I am using GitHub.
If I right-click on the branch from the left pane under `branches` there is no delay and it works as expected.
I remember seeing a ticket or question for this earlier and it was listed as fixed for 1.3b1. Perhaps it was not resolved for the toolbar buttons.