This may or may not qualify as a minor cosmetic-only cylinder bug:

This text is too wide for a cylinder:

cylinder "Auxiliary tables"

but when splitting it into two lines, the top line's text touches the top edge of the cylinder:

cylinder "Auxiliary" "tables"

That text should be moved down a bit, ideally vertically centered (if that calculation is possible at this level, else simply nudging it down a few pixels would suffice).