Submitted by sashik_eth, also found by adriro, horsefacts, MadWookie, hl_, 0xbepresent, peanuts, Dug, and Haipls
If the ticket owner lists the winning ticket on the secondary market and initiates their own claiming transaction before the trade transaction takes place, the NFT buyer could lose funds as a result.
Given that there are no restrictions on trading tickets on the secondary market, the following scenario could occur:
The next test added to /2023-03-wenwin/test/Lottery.t.sol could demonstrate such a scenario:
Consider burning claimed ticket NFTs or remove the possibility to transfer NFTs that have already been claimed.
TutaRicky (Wenwin) confirmed 
