[D&D 5e, Sheet by Roll20] All rolls doubling

So I am currently unsure what exactly is going on. As you can see in the attached image, the player is a Level 6 Totem Barbarian. The player and I have spoken, and scoured every inch of his sheet. We are unaware of anything either sheet-wise, or character-wise that would cause this phenomenon. His is the only sheet in all of my games to have this problem.

That's the standard "always roll advantage" for a 5e sheet. It shouldn't be doing that with advantage toggle switched on. In the sheet Settings (cog icon) try switching to Query Advantage (top right, near the NPC flag). Now roll a "Normal" roll, and see if you get a single roll. Then switch it back to Toggle, if that's what the player wants to use, and see if it works.

I appreciate the advice. I did as you said, and changed it to "Query Advantage". Even that didn't work as normal. It didn't give me the prompt to choose whether or not to roll at advantage, just rolled it advantage regardless.

Very odd. Easiest fix would be to go to Attributes & Abilties tab on a working sheet, copy the contents of the @{rtype} Attribute, and paste it into the broken sheet's @{rtype}. You could also copy the character and see if the copy functions normally. Sometimes changing the name of the sheet will randomly fix broken Attributes, too. edit - may as well copy the contents of @{advantagetoggle} too, while you're there.

So with some further experimentation, I've found some more.. intriguing information. First: Making a copy of the character sheet works to solve the problem. Second: Changing the name of the sheet solves the problem. Third: If I exit the sheet and go back in, then change the name back to what it was originally. The problem comes back. So I appreciate the help on the fix, and maybe that information will be of some sort of use. Just seemed pertinent to include since its a strange thing.