Material freezes when seeking ALAC on iOS

I'm having a strange track seek issue with LMS 8.2.0, Material 2.2.3, on iOS 12.5.1 (iPhone 6). Using Material via "Add to Home Screen", Material setting "Application layout" is "Use mobile layout", if I play local Apple Lossless ALAC (ripped from CD via iTunes), then seeking forward/backward will freeze playing, and occasional the frozen track will either restart from the beginning, or the next track in the queue is played. It can stay frozen for some seconds before anything happens. This is only happening on Material/iOS, not having this issue on Material/Firefox/desktop (Windows 10 Pro, Firefox 85.0.2); iPeng and LMS web UI works fine as well.

Also, Material is fantastic! The UI is so clean, it's mesmerizing really.