Excel crashing whenever I copy any cell from one specific document.

At work, I have an Excel doc tracking all our current projects and their status, but whenever I try to copy anything from that document, all of Excel freezes and requires me to force-quit it. I can copy/paste from other Excel documents no problem, and I can perform all other functions on my tracking doc no problem (such as adding lines, formatting conditions, etc.), but as soon as I try to copy anything, it crashes without fail.

I've tried saving a copy of the document, saving it to a different location, and re-naming it. I sadly can't just copy/paste everything to a new, blank Excel doc since again, that would crash Excel T_T.

Never seen anything like this before and how weirdly specific it is; any help would be greatly appreciated; thank you!