They usually do yes however it's all about prioritization.

You may have hundreds or thousands or open requests and issues.

With tens of thousands of closed issues that were either not reproducible, not actually problems, or largely indecipherable.

There's usually a feature roadmap which is where most of the development money and time is spent. If it's an older business application then certain bugs might easily take weeks to find, fix, test, validate, go through user acceptance, A/B test, and then deploy. But fixing is expensive work, so if the bug isn't severe it's usually deprioritized next to higher priority work.