They won't. They broke USB music playback in September of 2016 and have been refusing to fix it for over a year. And the fixes there are *trivial* -- it's stuff like playing the files in a folder in the correct order.
I haven't looked in the manual but did the manual ever say that there would be gapless playback or that playing files in a folder would be ordered by file name and not by ID3 tags? If not, then they can't be considered bugs they are just features that you want, or want changed.