Hi!
When I try to add a nested notepad (with right click on parent notebook), it appears at the root level.
I don’t know in which version this problem appeared.
Joplin 1.0.227 (prod, win32)
Revision: 4913fdb8 (master)
When I started using Joplin, it was already an issue. So it was present at least since 1.0.207. Luckily, in 1.0.231 it’s already fixed. It’s a pre-release, though.