Used to work correctly now I can only connect items to categories by going to category and slelecting items. Awkward...
Thanks for posting, @zfan4life.
Are you editing the item in your Square Dashboard or in your Square Online overview page in Items > Item Library? I checked in both places and didn't have any trouble viewing categories to add to an item. You might want to try switching to a different browser temporarily to see if that helps.
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