[wildmanx]

No there is not something. That's a misconception.

The author is under no obligation at all. Of course a request is no problem. But then if that request is ignored, then that's no problem either. Who knows why there is no response. Maybe the person has other things in life needing attention. Maybe they have a bad day/week/month. Maybe they are burnt out. Maybe they have already responded to you 100x or maybe they just don't like your name.

If they do respond -- great! It's likely in their interest to respond to bug reports since it's likely in their interest to have less buggy software for themselves (if they use their own software) or for their customers (if their customers use their software). But maybe it's not, maybe they have moved on, or maybe they are just on vacation. If they are nice, then they tell you. But even that's something they don't have to do.

You are free to dislike them for that, and you are free to not use your software anymore.

You are usually even free to fork the project if you want your pull requests in and they keep being ignored or rejected. If others think like you, you get a community right away. But many people don't fork. Because it's a lot of work suddenly being a maintainer. Then you suddenly get those requests and opinions and pressure. Don't like that? See! That's the issue here! If you don't like it, then don't criticize others for not liking it either.