On builds submitted with Xcode 11b2, after successfully uploading a build I'm getting an email a few minutes later with the following message:
ITMS-90562: Invalid Bundle - The app submission can not be successfully recompiled from bitcode due to missing symbols during linking. You can try to reproduce and diagnose such issues locally by following the instructions from: https://developer.apple.com/library/archive/technotes/tn2432/_index.html
Following the link, I'm able to export an ad-hoc build with bitcode without any errors locally so it doesn't seem to be much help.
I've also tried submitting builds with the checkbox for bitcode both on and off, though the app in question includes an Apple Watch app and that platform always requires bitcode so it may make no real difference.
Anyone seen this before and know how to resolve ?