Because i am a smart speaker user, and I couldn't stand delayed youtube, I decided to try to fix this extension.
Issue was with nonexisting audio element which is destroyed when youtube loads.
I changed syncAudio element location to body, and it seems working now.
Hey, sorry for the late reply, thanks for taking the time to debug and find the issue!
I've merged it and will update the extension today in the chrome web store.
Because i am a smart speaker user, and I couldn't stand delayed youtube, I decided to try to fix this extension.
Issue was with nonexisting audio element which is destroyed when youtube loads. I changed syncAudio element location to body, and it seems working now.