OK so I recently updated my DX to the new firmware, and I have noticed a strange problem with headings getting screwy. I don't have any hacks installed or anything. Basically headings (bold fonts) alternate randomly, but it will only happen for a select few font sizes per document. Someone said they did something to make fonts darker or added more sizes or something, I didn't notice but they screwed something up. Picture attached.
Like for one book, fonts 2 and 5 will do it, for another only font 3, for another only fonts 1 and 4, etc.
I think it has something to do with the conversion because books that I download off of feedbooks always have screwed up size #3, and epubs I convert with calibre always have screwed up font #2 and #4. Anyways, this never used to happen before the most recent firmware.