Some window when update do not have title.
It can be hard to find as that specific window popup and when come back to main window several time I think synaptic is stuck (it isn't) i after that I «lose» time finding the right window (the no name one). See the screen shot to see the no title window.

Some window when update do not have title.
It can be hard to find as that specific window popup and when come back to main window several time I think synaptic is stuck (it isn't) i after that I «lose» time finding the right window (the no name one). See the screen shot to see the no title window.