I have this quite strange problem with remote control; whenever I listen to music at full screen (viewing album/artist art) and try to resume playback after pausing, play -button doesn´t resume playback, but instead it calls visualization preset -window. Resuming with pause button works normally, but that´s not very intuitive for me.
I´ve had this problem also with LibreElec. My system is Odroid C2 and remote is Logitech Harmony Ultimate, and I´m using bluetooth (bluetooth usb dongle as receiver). This happens without any modification to button mapping. If music playback is not at full screen, play button works just fine.