The standard player (i.e. the movie list) has the same problem with skipping the intro. I use "Hymn" from Ultravox to test, which starts immediately with lyrics, without a musical intro.
I tested this on a uClan Usytm 4K PRO (Hisilicon with gstreamer). I just double checked on a VU+ Solo 4K, it doesn't skip the intro of the same MP3 files.
I'll compare Media Player behavior later today.