Booting OpenCore through rEFInd makes macOS 10.15.4 not boot

For the past 3 days, I was stuck on this screen when trying to boot the installer of macOS 10.15.4.

All the solutions I found were only for Clover (which needs to be updated to version 5107) and for AMD (where the kernel patches need to be updated).

I have had this issue on an i7-3770k / RX 5500 XT running OpenCore tho. After countless of hours of troubleshooting I finally figured out what the problem was: Booting OpenCore through rEFInd. If I boot into OpenCore directly, 10.15.4 boots fine.

Just thought I'd share this here, so that other people become aware of this problem.