So I got the custom like button to work, but I've noticed that when you visit pages on the blog with specific tags, the like button won't work on any pages after the first one. Is there a way to fix this or is just one of those things that there isn't a fix for?
Hm, that's a great question, because I had not noticed this before.
To be honest I have no clue, it could be something wrong with the implementation of the button (but I've successfully implemented it with pagination and infinite scrolling, and I still face the same problem as you, now when I tried liking stuff on my blog with pagination + on page 2 in a tag), or it could be something with the like button.
Have you tried the same problem with a regular like button? At the top of my head I don't think it should matter, really because in this way, with the custom like button, we are still using the regular like button as our "base", so they should work the same way. We have only altered the look of the button, not the function of it.
I don't really have the time at the moment to look into this more thouroughly, but I will try to solve this problem when I can, and post something about it. If you want to test it out, I'd recommend you to use a regular like button and see if it behaves the same way as the custom one. If they don't I'd say there's something wrong with the implementation of the custom button, if they behave the same way (the regulaur button fails to like on second tag page), then I'd say there's something buggy with Tumblr and send them an email about it.
Thanks for the question, and good luck! /Emma