I've been working from home since March and my experience matches yours exactly. In general, any task that requires you to allocate several hours of consecutive

I've been working from home since March and my experience matches yours exactly. In general, any task that requires you to allocate several hours of consecutive time with no interruptions (and coding is definitely like this) is much better from home. So much better in fact that I wish I could continue to work from home at least a couple of days a week even after covid is over! I suspect a part of this is due to the fact that developers/individual contributors are more used to using tools like git, ssh etc. that makes the transition almost seamless; my workflow is completely independent of even my machine, I could pick up any brand new laptop on amazon and I'd be productive within minutes. Maybe less familiarity with the technology stack is a significant source of additional attrition.