In the web player here on the BBS which currently says it's version 0.2.1, it appears print() now displays numbers as hex:

EDIT: oh wow I didn't realize v0.2.1 was out for real and not just in the BBS web version; I downloaded it and tried running the same cart (#xmasfish) and figured out how to reproduce it so I have corrected the title and description since my first report wrongly said the issue was with tostr()

as you can see here, it only displays as hex when x,y arguments are given to print():

Oof, thanks! I'll see what else shows up and do a patch tomorrow.

Fixed in 0.2.1b // https://www.lexaloffle.com/bbs/?pid=78912#p