Thanks Jim. In my case, I'd be going from v126.96.36.199, where I started seeing so many complaints about the next version that I thought I'd just stay with it and use FF as a supplemental browser. I've updated Plug-Ins, but have held off on the rest, probably not great practice, but I have strong resistance to being in perpetual beta.
I gather from what you say that it's hard to assess the situation without knowing the whole updating sequence and accumulation of possibly hidden incompatibilities. I've had apparently zero problems thus far.