I run FMPA 15 188.8.131.52 on Sierra 10.12.1.
It occurs repeatedly that if I Adjust the Layout Height by hand, that the little yellow InfoBox with the measurements will not disappear after releasing the mouse key. In addition even the adjustment is not always successful. If I do it "too fast" NO adjustment will be made. This was also when I had El Capitan before.
Any Ideas? What should I do?