This is on iOS but their app definitely went downhill pretty severely in the past year.

If any sort of bluetooth or background playback is involved, the previous playback position will almost always be lost. Video/audio in a playlist skips and don't play sequentially. Reordering items manually will have their order re-scrambled as soon as you start scrolling the item list in the playlist. Playing an item to completion even in foreground will show a random amount left on this item when you moved onto another item.

It's hard to say Huawei is exclusively to blame when their primary video playing features (including background playback) is already so buggy.