I'm having similar problems using the sticker pack template in Xcode 15.3. It seems that using the sticker template with Xcode 15.3 causes a lot of weird bugs. When I tried to create a sticker app on my old MacBook that can't update past Xcode 14, I didn't have any problems. Unfortunately, I can't release an update from Xcode 14. Sorry I couldn't be of more help. Hopefully my comment brings more attention to this issue.
eewee4
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