For a workaround, I created individual paging groups for each extension. :-). For a small system, like mine, it took all of 2 minutes, but for a system with hundreds of extensions… this could be a problem.
The main issue will be to reproduce it with success.
For my mart, There’s no issue on FreePBX 15.
Is there something specific to reproduce it?
After a backup / restore? FreePBX update from 14 to 15?
Did you try to launch: fwconsole ma install parking again?