Ah, I see! So, ZUN actually go against the mindset of most company today that ranges from selling the same stuff over and over *looking at you, Capcom and your Megaman collection* and leaving the game buggy *Ah..., Fallout 4 and Mafia 3*
Yeah, you are right. I can't think of any other bug in the game. I only bring up those two bugs because they are the only two prominent ones that detractors might use as an argument cuz I believe that they will complain only because they see other shmup as bug-free and immediately deduce any game with bug as bad.
As for not caring about "fan feedback", I'm not even sure what that means. Feedback about mechanics? Difficulty? Bugs? Story? Music? Characters? It's his work. Bug reports are about the only thing he should care about, really.
It's not much of a fan feedback, but rather, like developers' participation with their fans outside of releasing games. There are two things that most game developers/companies do and I guess people like it?
First, I think people would complain that, aside from showing game demo image and releasing a game, ZUN never holds a contest/poll, or tease fans about the direction where the next game should go to raise people's interest i.e. "I wonder what if there was a civil war in Gensokyo." That's what Ed Boon from Netherrealm Studios does all the time with Mortal Kombat X and Injustice. Sega also frequently chat with their fans on Twitter everything about Sonic, from fan arts to the upcoming game.
For the second one, I mean like "ZUN never listens to fans wanting Mima back so Touhou sucks!" I figure people would complain about this because for example, Netherrealm Studio listens to fan request for Alien in Kombat pack 2 or Capcom finally put X in MvC infinite. Fans rejoice!
Yeah..., Those are what I mean about feedback.
Off-topic: Even though I brought Netherrealm Studios Studios as an example, I actually hate them since the release of XL. They actually toy with their fans like they were nothing. Ed Boon once teased about Fujin, Rain, MK story pack and Kombat Pack 3 for countless times to raise fans' interests, and guess what happens now. Those never become true. That's when I cut the cord and abandon MK and all games developed by them entirely. I can feel that they think of fans as their play things.
This is what I learnt from this mess: Do not outright tease and troll your fans of your false upcoming contents to the point that they should be expecting the real thing only for them to get nothing at all.
I'm actually grateful that ZUN does neither of the above because wayyy too many companies nowadays love to play with people's desire for their own profit while ZUN doesn't outright say or promise anything regarding fan demands.