Unsure if this counts as a bug report or a suggestion, but the Air bubbles from chests (see Jolly Roger Bay's Plunder in the Sunken Ship star) don't restore Sonic's air, leading him to drown faster than expected in such situations.
Edit: Additional unexpected behavior: Metal Cap does not prevent Sonic from drowning the way it does for other characters.
Unsure if this counts as a bug report or a suggestion, but the Air bubbles from chests (see Jolly Roger Bay's Plunder in the Sunken Ship star) don't restore Sonic's air, leading him to drown faster than expected in such situations.
Edit: Additional unexpected behavior: Metal Cap does not prevent Sonic from drowning the way it does for other characters.