Using #0917 then #0918 (with debug switched on) playing a video and bringing up both audio and subtitle off-set options in top centre of Estuary GUI, I found was unable to adjust (left-right) with either CEC remote or the keyboard. (Stuck, unable to adjust)
Steps to create problem, with video playing, via playback GUI
First adjusted audio off-set, movement left and right OK
Then switched to subtitle off-set, movement left and right NOT OK
Swiched back to audio off-set, movement left and right NOT OK
kodi debug.log
Note: almost never need to adjust audio/subtitle off-set, so not tried option in a long time, (Apologies if its an error in my set-up?)