I maintain a comic book Tumblr, where I post the covers to every comic book that I read and other assorted comic book ramblings. I tag every post with the series name, writer, artist, publication company and publication year. Recently, newer tags (like iZombie and 2012) don't get remembered when I go to add them in the tag field when posting new issues. They still work like tags when published, but I have to type them out every time instead of having Tumblr autofill like it does with every other tag I've used up to a few weeks ago.
Is there a limit to the number of tags Tumblr can remember and autofill? And if so, is there a way around it?