- 
    Bug 
- 
    Resolution: Fixed
- 
    P2: Important 
- 
    5.15.8
- 
        ebb49c66aaf22ed55d62ff7bc3690fce00b7d8ba
Configure option 'Using precompiled headers' changed from 'yes' (in Qt5.15.7) to 'no' on macOS10.13.
Should be checked is the change intentional.