There is an annoying behavior with the login modal dialog: it closes whenever you release the mouse button outside of the dialog. I think this issue is rather new.
This is what happens to me all the time:
- I click Login
- I select the previous user name with the mouse so that I can enter another one (I do this a lot for testing purpose). To do this, I click at the end of the user name, drag the selection to the left and release the mouse button outside of the dialog.
Expecting behavior: the user name ends up selected.
Actual behavior: the dialog closes.