I'm glad this is tagged investigatigating because It is a frustrating glitch and a pack feature party gameplay item. I hope to now see it fixed.
Your Sim can't resume carving and needs to scrap the pumpkin everytime regardless of how little or how much time they spent on carving the pumpkin before the interuption/cancel and has to start a new carving over again. If it's a guest at a party, your sim has to scrap the guests pumpkin if they are interupted and ask the guest to carve a new pumpkin again (at least since I bought the pack almost 2 years ago). And I remember it on the AHQ. I did take some pics for this but they won't upload rn (side note: Accessing/interacting with the Forums on mobile is very glitchy and often difficult to navigate).
It's in the OP's video and it is a known issue so I dont think pics are needed. The fix is to be able to resume carving of its interupted, the option to resume is there. The difference from mine and the video is that when you click resume, it loads the pre-action (I paused and hovered over it), unpause and it literally disappears as it falls and never hits the bottom. You can que it up a million times and it'll never hit the bottom as an active task.
This bug is very frustrating at costume parties because it takes so long to carve a pumpkin and it can cost you the tasks if you have to scrap a pumpkin and start again because of being interrupted (hence why I have 4 stations in my party room to cover all my bases). Hoping for a fix on this soon and it's fresh in my head again as we get closer to Halloween. Would be a great surprise for the Oct 2 BG update coming!
PS4: ROM GP, Spooky SP, Paranormal SP, Waterslide SP