I had been too swamped to be able to continue this conversation because of the highly prioritized work related to WWDC25, and after that I lost the track of this thread. Sorry for that. Thanks to another developer reaching out via DTS with the same issue, I am now picking up this thread, which hopefully is not too late. I'd like to confirm that I can now reproduce the issue. As folks have mentioned, the issue happens only in an Xcode project using folders, not groups. I've always used groups which helps me better organize files logically, and so had not seen the issue before. Xcode 26 Beta 6 doesn't fix the issue. Before the issue is fixed from the system side, the workarounds folks mentioned, like using groups instead or giving the new model version a name alphabetically ordered to the last, sound good to me. Best, —— Ziqiao Chen Worldwide Developer Relations.