As far as I know there isn't but you can always use search button in here, because there is a few good threads about bugs in current version of MorphOS.
> Is there a flag or switch I must set in Open Firmware to ensure MorphOS sees the > full 64MB of vram? MorphOS sees all 64MB vram when booting using the mac boot > selector (hold alt during boot)
Old thread about that: https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=6560&forum=11#67736
If you want OSX aswell, you can try installing OSX first, leaving enough space for MOS, then install MOS. It works for me. MOS boots as default, and it sees the full 64MB of VRAM.