My MG4 ER has the same "feature". The MG4 has been out for years, so they must somehow think that this is what people want ?
I have my music with file names like "03 Imagine.mp3" for songs where I care about the order that they are played, which is most of them, and have the MP3 title clean (without the two digits and a space wasting precious screen real estate). That works well for my MG ZS EV. But the MG4 software sorts by MP3 title if available, and only file name if there is no title. So now i have to erase the MP3 titles for most of the songs to get them to play in the correct order. Fortunately, Mp3Tag makes this a bit easier (it can erase all selected songs in one go), but it's still a lot of work.
The other issue is that while it remembers the last song played, it doesn't remember the position, and plays that song from the start. So if you are doing a lot of short trips and the remembered song happens to be a long one, you get it multiple times.
Worse, when that song finishes, it goes to the next song alphabetically in the whole USB, because it doesn't remember that I want to play by folder.
Final whinge: at the end of the folder, it doesn't go to the next folder, it repeats the first song in the current folder. So I have to manually go to the next folder myself. I like to play the whole USB sequentially. My ZS EV did all that perfectly, albeit with 3x the lag and 3x more frequent crashes. And a pause button in the middle of the album art that is about 30% of the width of the art. And it's round, cutting off the corners.
Really MG, is it that hard to get a music player to function sensibly? I suppose that all the cool kids use streaming audio services now, so maybe they figure that a functional USB player isn't important these days?
As a point of interest, does the MG3 Hybrid+ infotainment have the same behaviour?