Hello, that is the same issue as described above. It seems to only happen when there is a single monitor too. We still haven't been able to find a workaround for it, other than removing the WM_GETMINMAXSIZE handler (which was added so that chromed windows won't cover up an auto-hidden taskbar).
If you'd like the sample we mentioned in our previous reply, where we can repro it just with a regular WPF window, please write our support address and reference this thread.