FF 55+ "downgrade" warning?

[DN123ABC]

I only recognize Dictionary search as the one I have working under Fx55.
How many of those worked under 52 and if all worked then which features of 53 to 56 are more important than your extensions?

1) Pretty much the same, I think.
2) Speed, reliability.
3) As I said, those are working, and I'm living with it. Would be great if the others could be fixed.

Getting a bit off topic here, folks. Can we get back to the original subject of the thread?

No, this was regarding staying on the current version (for me 56), versus downgrading. I was sharing why I'm staying, and asking about how to avoid the version 57 leap to broken-ness. Thanks for the opportunity to clear that up.

[DanRaisch]

But that was not the point of the original post. The question was why moving back to an earlier version would be problematic after FX updated to 55 or higher. The OP didn't ask who was staying with a higher version or why their extensions were of utmost importance to them. There's enough other threads dealing with such issues.