My friends and I are using 5e with Epic rules that don't increase Proficiency Bonus past 6 for most classes, and are using a modified version of the Community 5e sheet that lets us directly modify the proficiency bonus (there is no other way to do this by default) to keep it at 6 past 20th level. However, upon doing this, the Compendium drag-and-drop functionality seems to cease functioning entirely, and spells can no longer be copied over automatically. This is pretty strange, as it works (almost) flawlessly on the normal version, and as far as I know that functionality is purely HTML-based, with that section of the sheet never seeing any modification (outside of me accidentally omitting a closing div tag and breaking every tab, which has since been fixed). Is there something I'm missing that the wiki doesn't mention? Thanks! EDIT: As it turns out, this issue had something to do with the way I modified the sheet. I'm not sure what exactly bricked drag-and-drop, but I redid my modifications in a more clean fashion and everything works perfectly now, drag-and-drop included.
