Using FileMaker Pro Advanced 12.0v3 (Windows version) we have a simple layout with a tab panel that contains a portal. After changing the zoom from 100% to 150% (or setting Preferences to "Enlarge window contents to improve readability") the buttons on the portal rows do nothing on first click except make the portal active. Second click performs the script and it works fine until the zoom is changed. Verified using the Script Debugger.
Is this a known bug in FileMaker 12 or am I missing something?