[jim33442]

Look I'm not an expert in web browsers, but I defer to those extension authors who definitely are. There's some reason uBO doesn't work well in MV3 even though they tried. Whatever technical explanation there is for why MV3 is fine, there's some caveat not mentioned.

[lxgr]

That’s because Chrome removed an important API in their MV3 implementation, not because the MV3 specification mandates said removal.