One of my player's sheets stopped accepting drops from compendium. I tried it with two different sheets, one accepted spells, the other did not, using the same browser and overall configurations. I also tried to duplicate the sheet (following this recommendation: <a href="https://app.roll20.net/forum/post/6204990/drag-and-drop-not-working-from-compendium-to-character-sheet" rel="nofollow">https://app.roll20.net/forum/post/6204990/drag-and-drop-not-working-from-compendium-to-character-sheet</a> ), but it didn't change anything. While writing this bug report, I tried adding a Torch, to check if it was not accepting any imports, and the Torch worked. Immediately after that, I tried importing a spell, and it was working again. I'm not sure how to replicate this bug.