Well, to be clear, there was some feedback (e.g. it was calling subagents and printing some thinking messages).

That said, yes, it is pretty common for me to wait 10, 20 and sometimes even 30 minutes without steering the model or looking at what its doing. I usually write a pretty detailed prompt at the start that describes the issue, the usecases, the testing to do and the definition of success; then I sometimes ask it to draft a plan and give it a read, but after that I just press enter, let it run and come back when it's done.

In the end I do a manual review, both of the code and the functionality, but most of the time I get exactly what I wanted.