There are problems with setting the tag on the study set. and i don’t know how to handle it… hope i can undo this…
Please check two videos… each video shows different bugs i guess…
As you can see in the video
I added :: to the tag and deleted it. and now i have a lot of texts that starts with :: on the cards.
thing is…. it’s not on the tag list anymore and all of sudden it’s on the comment area. uh.. and also using edit card mode and “edit comments” button, i can delete it.;;;; 
My screen is full of tags with :: that I need to click and delete one by one now.
Is there a way to erase this at once? I’m using a margin note on my iPad.