I can no longer change an album/music folder by clicking four times on BTN2
Clicking four times never did anything: it's two times for next (and once for play/pause, three for previous)
Something weird seems to be going on though, as (at least for me) https://banglejs.com/apps/#gbmusic shows v0.03 as the latest version, instead of v0.04. (even if I download https://banglejs.com/apps/apps.json directly)
The "disable touch controls" setting was only added in v0.04, so my guess would be that whatever weirdness happened might have caused v0.03 to be installed on your watch.
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Clicking four times never did anything: it's two times for next (and once for play/pause, three for previous)
Something weird seems to be going on though, as (at least for me) https://banglejs.com/apps/#gbmusic shows v0.03 as the latest version, instead of v0.04. (even if I download https://banglejs.com/apps/apps.json directly)
The "disable touch controls" setting was only added in v0.04, so my guess would be that whatever weirdness happened might have caused v0.03 to be installed on your watch.