for a sufficiently narrow definition of "major issue" that excludes
- the encryption password hint leak ("that was Disk Utility, not APFS")
- APFS volume erasure issues ("also Disk Utility")
- Adobe, Unity (editor and games built with it), Steam, Source Engine, and FCPX crash, performance, and asset loss issues on APFS volumes, all of which went away when moved to HFS+ volumes ("those teams should have adapted their software during beta")
- performance and incompatibility issues with spinning-disk drives ("platters are bad, APFS is designed for SSDs")
- RAID kernel panics, even on supported RAID 0 configurations ("that's corecrypto, not APFS")
- the encryption password hint leak ("that was Disk Utility, not APFS")
- APFS volume erasure issues ("also Disk Utility")
- Adobe, Unity (editor and games built with it), Steam, Source Engine, and FCPX crash, performance, and asset loss issues on APFS volumes, all of which went away when moved to HFS+ volumes ("those teams should have adapted their software during beta")
- performance and incompatibility issues with spinning-disk drives ("platters are bad, APFS is designed for SSDs")
- RAID kernel panics, even on supported RAID 0 configurations ("that's corecrypto, not APFS")