That’s not a bug and you can close this topic right after, but just to leave a track of that bug : my OwlCarousel stopped working while thinking not having changed anything, with the following error “Uncaught TypeError: $owl.owlCarousel is not a function”.
While the Performance > JS > “Advanced scripts controls” were OFF, the OwlCarousel JS library inside the Advanced scripts control was also turned OFF.
The solution was to switch to ON the “Advanced scripts controls”, enabling the JS library, saving, and turning back to OFF the “Advanced scripts controls”.
Very strange behaviour and it costs some hours to figure that out.