Changing partial scss file does not auto-recompile main scss file

[Claudiodavid-ai]

I have a _header.scss file which is included in the main.scss file. When I run lein scss :dev auto I expected the main.scss to be recompiled if I change _header.scss but it dosen't. I can see in the terminal "Change detected _header.scss" but nothing about recompiling main.scss.