Same exact problem here. For some reason the background script simply stops responding to sendMessage randomly. Can't figure out why.
alexkates
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@radiolondra your post and work in this space is well known on my team! Thanks for this.
Your language towards a "well structured MV3 Service Worker" is that the heart of my post here. Looking through my minimal-reproducible example you'll see I'm able to reproduce this issue with 10-20 lines of total code.
Do you see anything in there that would cause this?
In the meanwhile I'll explore your work arounds. Thanks!
Sorry for the formatting... This forums app is interesting.
Same. Background script still becomes unresponsive.
I'm still seeing the issue in 17.6.1
18.0 Seems to be working better.