I'm encountering the same issue as you; currently, I've implemented a 1.5-second delay. I hope Apple can resolve this soon. Recently, I tried upgrading to StoreKit 2, but on iOS 26.4, Transaction.updates does not return unfinished transactions upon launch, which is causing some problems.

No restart is required; simply delaying the call to [[NSBundle mainBundle] appStoreReceiptURL] by 1 second resolves the issue.

ios15 bete2, i found that finishTransactions is no longer properly removing the transactions from the queue.

ios15 bete2, i found that finishTransactions is no longer properly removing the transactions from the queue.