Occasionally, I will be in layout mode and go to change to a different layout to work with. When I do, most of the layout names are grayed out and can't be selected. In most cases the grayed out layout are in a sub level folder 1 or more levels down. For Instance Detail Layouts/Card Layouts All layouts in Card Layouts are grayed out and can't be selected.
I have checked and there are no scripts or script triggers running.
To resolve this, I end up either using Manage Layouts to get to the layout or close and re-open the file. On a couple of occasions the layouts were also grayed out in Manage Layouts.
This has been going on for a while, so it was there in earlier versions of FileMaker Pro Advanced 17. My current version is 22.214.171.1240 and I'm running on a MacBook Pro (15 inch, 2016 ) OS X 10.13.6. Also had the issue in OS X 10.12.X