New ask Hacker News story: Advice needed: difficult coworker and passive manager

Advice needed: difficult coworker and passive manager
2 by throwawaydev123 | 0 comments on Hacker News.
I'm considering leaving my job at a big tech company working on a cool project because I'm having trouble managing my work relationship with a difficult coworker and feel little support from my manager. I am leading a project which a difficult coworker is contributing to. They see any disagreement with them technically as a personal attack, including when I leave them code review comments. I'm the only one working closely with their code on my team. I have brought up with my manager the consistent pattern of low quality code, bugs, missing estimates by 5x, 10x. This has escalated to them leaving me very negative performance feedback and complaining to my manager about my "toxic" behavior. All the other feedback I got from my team was overwhelmingly positive. This coworker said I was "creating an atmosphere of fear" for "ridiculing" and "targeting" them publicly. I've never received feedback like this before on any other teams. I admit, I am direct and get straight to the point when it comes to code. Should I expect my manager to do something other than telling us to "resolve your differences"? I would really just like this coworker to deliver tasks in a timely manner and not create extra work for me or other people, or at the very least communicate to the team when timelines are slipping. Any advice? Strategies?