I don't know that this is necessarily wrong. 不 and 味 are there for meaning and not pronunciation, so it's not like one sound necessarily corresponds to a certain kanji. There are two kana and two kanji here so it might seem simple in this case, but what about a word like 昨日(きのう)?
I also just found that the furigana for 蔓延る(はびこる) are incorrect and make it look like はびこるる.
@EmptyMemory, Like @SenseiHanzo says, for 不味い it's not necessarily aligned with the kanji. But the problem here is that the way I show it at the moment it looks like the furigana is attached to 不. The common solution to this is to align it over the entire word instead of left aligned. I've meant to do this for a while but haven't gotten around to it. Now that I'm working on several other furigana issues I'll try to finally get to it.
@SenseiHanzo, thanks for pointing that out. Will make sure I fix it in my current batch of furigana fixes.
misplaced furigana
yeah