TBH I wouldn’t recommend you be building applications in .Net Framework… Most complaints about it have been a solved problem for years with .Net Core/.Net 5+. And there are upgrade paths, at least if you aren’t maintaining WPF/Winforms

Bugs and regressions? I wonder if that’s for different things than I touch, I’ve had almost no disruptions for the last 9 years. But I’ve mostly worked on console apps and backends. Almost no UI work aside from some WPF and Winforms side projects ages ago.