Thanks. It's filed. The feedback number is: FB16099492

Thanks for the reply! And yeah, I had noticed that but it didn't really get me anywhere. I ended up abandoning the approach. When I commented out the module the next merged module would throw an error. And the crux really was that it worked in the regular sim or with the Mac target and mergeable libraries turned off so I felt like I'd be unlikely to really resolve it:/

Any progress here? Still not working as of Xcode 15.2. The 16.4 simulator isn't working for me either. I'm getting: Error enumerating unfinished transactions: Error Domain=ASDErrorDomain Code=500 "(null)" UserInfo={NSUnderlyingError=0x600000c5b780 {Error Domain=AMSErrorDomain Code=301 "Invalid Status Code" UserInfo={NSLocalizedDescription=Invalid Status Code, AMSURL=http://localhost:50398/inApps/history?REDACTED, AMSStatusCode=400, NSLocalizedFailureReason=The response has an invalid status code}}, storefront-country-code=USA, client-environment-type=XcodeTest(file:///Users/usrname/Library/Developer/XCTestDevices/AACF3F51-FA80-45B6-B9F1-A47574CE548F/data/Containers/Shared/AppGroup/749C8FFE-AF64-4A2D-A041-E19F365027A2/Documents/Persistence/Octane/com.apple.dt.xctest.tool/)} Missing transaction data for purchase Purchase did not return a transaction: unknown If I set the simulated error to nil it's not working either. If I use let p = try await session.buyProduct(identifier: products.first!.id) I'm getting: Failed to complete off-device buy for appstore.xyz. The purchase was successul, but it didn't return the expected transaction JWS. error Error Domain=SKErrorDomain Code=0 "(null)" Edit: Looks like it requires a host app. Then it works

Hey, did you ever solve this?

Nevermind. Looks like it was a config that I had set that broke it. Doesn't have anything to do with Xcode:p

Thank you! The problem was actually related to a misunderstanding on my part on some stencil buffer operations. Works now as expected!