Product and version: FileMaker Pro Advanced 17.0.3
OS and version: macOS High Sierra 10.13.6
Hardware: MacBook Pro mid-2014
In layout mode a layout is displayed with the Inspector panel on the right side. When on the "Position" tab of the inspector the current "unit" setting is displayed (in,cm,pt). From the "View" menu select Inspector -> New Inspector and a new floating Inspector window is displayed and when on the "Position" tab the units are also displayed.
Quit FileMaker Pro Advanced 17.0.3 and re-open it, and re-open the database and go to Layout mode. The floating Inspector window no long shows the units. If you click on the spot where the unit should be displayed then it will switch units and display the unit for that specific place you clicked but no where else. This problem did not appear when I tested with the 32-bit Windows version on Windows 10.
How to replicate
Workaround (if any)
Close the Inspector floating window and open it again