The phrase "numerous bugs" means that there are a lot of mistakes or problems in something, like a computer program or a system.
Sentences with «numerous bugs»
The new update is spare in terms of new features, though it comes with numerous bug fixes. (techtimes.com)
The early consoles sent out are very much in a prototype stage with numerous bugs and problem, but this is still a major flaw that should have been spotted. (wolfsgamingblog.com)
There are also numerous bug fixes and new features included. (howtogeek.com)