TorBrowser fails maximizing while using diffrent homepage

I installed the latest version 4.5.3 on my Windows 7 x64. As soon as I change the default homepage to anything else than "about:tor" the window-maximizing of TBB doesnt work. The Window jumps back to its original position and size while manual (drag and drop) maximizing works. Tested with search.disconnect.me and check.torproject.org.

Trac:
Username: kleft

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