I think you’re encountering the same issue as this person: (a forum link was meant to be here but apparently i’m not allowed to include links. it’s a thread in the help forum a couple of posts down, titled “since the update to 6.3.0 certain shortcut icons are really small” Since the update to 6.3.0 certain shortcut icons are really small)
tl;dr: it’s being worked on and should be fixed soon