Using two monitors, I always have xplanet full-screen on my right monitor when CQRlog is running.

For some reason after say, half an hour, the globe (azimuthal) clearly has rotated. 

Not a really big deal but a bit annoying for sure. What I mostly do is close xplanet and, from the window menu, reopen it.

That solves it for the next half hour or so.

Does any of you know how this happens and,  even more important , how to straighten this out?

73, Tjalling PA3GOS.