PGAdmin "fake freeze" on start (grey screen)

I experienced in all last versions that after the starting the PGAdmin seems to be freezed.

Grey screen, and I'm waiting for the master login - what never happens.

But when I do something with the browser window, like click, key push, resize, etc, then I get the login window in it. It is working.

So it seems to be not activated automatically.

To make an example: like in Delphi, if we put the first actions to OnActivate event, and somehow it never happens.

Does anybody also get this problem?

Thanks

   dd