In MW1.39, the mobile view I get with MFE is not as efficient on my wiki as the old view (which placed the infobox above the article sections rather than floated to the right and possibly parallel).

The best solution to my problem would be to have a simple switch or some js code (I guess) that would allow reversion to a previous view.

The problem may be easily understood when viewing the following article in Mobile view. (In Mobile view, the audio player gets truncated on the right, and the Lyrics table gets compressed to an unacceptable extent.) https://sarkarverse.org/wiki/Kona_mana_mane_na_mor_ankhi

This solution gives users greater flexibility while providing mobile features.