It would be great if you would put a copy of the report on openradar.me and post the link here.

Thank you for adding some more details, Kevin. As it currently seems to me that auto-mounting these sub-volumes on the Windows share is immediate, I'll stay with the method of simply re-reading the once-empty dir if I realize it's a mountpoint. But just in case - do you know if there's a DA callback that'll notify me immediately once the mountpoint gets triggered? I only know DARegisterDiskMountApprovalCallback, and that comes in only after the new volume has been inspected a bit, I believe.

I just like to add my appreciation for the fact that this API is still available in ObjC format and not Swift-only. Not sure if that was intentional or necessary, but I'm glad either way :)

searchfs takes practically the same time searching for creation dates than it does for file names. searchfs now takes 13-15s on /System/Volumes/Data with about 1.5M files. I suspect the increased speed is due to the faster Mac I'm using now (M4 Mini). But the issue becomes less significant now with faster Macs. I used to wait a minute for a search on a decently full startup volume, and that was standing out quite much vs. the "few" seconds it took on High Sierra with HFS+.

Would you please file it also at https://openradar.appspot.com/ Thank you for the effort.

I suspect it's not a bug that would get fixed but rather a case of bad project configuration, and I just need to learn what the problem is on my end. That's why I now opened a DTS incident and hope it won't get rejected because you asked for a bug report instead. I hope that this allows for a more direct dialog (Radar entries have never led to a dialog but only a reponse "we think this is fixed, please confirm" reply at best).

It would be great if you would put a copy of the report on openradar.me and post the link here.

I don't think it's sandbox related because my app iClip has the same issue: If the app was launched from within /Applications, the Help isn't found ("The selected content is currently unavailable"), but once I move it into the App folder, even if I rename it, Help comes back. Also, I build my app not with Xcode but with Xojo from 2021, and the Info.plist contains no Xcode or SDK related entries.