Visual errors after updating sheets.js

[GerRudi]

After updating sheets.js with the latest sprite sheets, visual errors are appearing in IE and FireFox (not in chrome though).
You can test it yourself here (same code as yours, only with the updated dyes/skins/sheets.js, using data from http://static.drips.pw/rotmg/production/current/.
Without the updated sheets.js, it works fine in all browsers.

It kind of looks like the Mask is offset by 1 pixel, but only for some skins?

Are you familiar with this issue or do you maybe know a possible cause of it?

I stumbled upon this issue because I wanted to update the fitting room to the latest rotmg build and add support for 16x16 skins. It's actually done already, but it has these graphical bugs with the 8x8 skins mentioned above.

@Nightfirecat