To be honest, it really wasn't addressed in a timely manner.
This ticket was opened a month and a half ago. Based on my understanding, all that was required is adding the new Pale Moon GUID to the add-on code, with zero functional changes (which is exactly what was done in the pseudo-static version). Surely, a month in a half is way more than enough to do something like this.
Instead, the request was apparently completely ignored until 10 days ago, where Pale Moon V25 was released and the behavior was actually broken. And it still wasn't addressed, moreover the attitude of the responders made it clear that it won't be addressed, out of principle that the add-on should not support "outdated browsers".
I specifically do not want to get into the argument of whether Pale Moon is outdated. The team here claims that it is, because it does not use latest Firefox code. The Pale Moon team claims that it is not, because they backport all the security fixes. I am not familiar with the code and the process, and therefore I don't want to make a stand on it. Clearly, however, at this point it is not outdated. Even if it was based "as is" on Firefox ESR24.
I do understand the decision of the ABP developers to focus on the mainstream browsers. It is totally conceivable that in the future, the UI changes and other differences between FF and PM will make it impossible to support both in a single trunk with only minor technical changes like the GUID. It would be totally understandable that at that point the ABP team would say "Guys, we're sorry, we don't have the bandwidth, you are on your own".
But that is not what was said.
The attitude of the responders here feels obnoxious, elitist and snobbish. Perhaps I am misjudging the intent, but it's basically looks like "Who do these weirdos think they are making their own browser? Do they really think they can do anything better than Mozilla? And look at their arrogance - having their own GUID now, not adopting Mozilla's latest UI changes! And now they are asking us to support them? Screw them! The add-on is now broken in their browser because of some minor technical issue? Good! Serves them right!".
I understand that Pale Moon is a minor browser at this point, with nowhere near the client base of Firefox, however it is not totally obscure either. Perhaps the ABP team is not sufficiently familiar with the project to know immediately what's behind the hood, what code it uses, what the development plan is, and what it means to support it. Totally understandable. But again - the request was opened a month and a half ago - and at least on the surface, I have not even seen an attempt to respond and find out the answers to all these questions, or to reach some form of agreement. Just complete disregard.
Very disappointed with the attitude of the team here, to say the least.