This is very important to me and unfortunately I'll have to switch to Workflowy (and abandon some important Evernote functionalities) if it doesn't get implemented in one of the next versions.
It got back to normal for me by the way !
I don't know what changed, maybe Evernote desktop updated automatically or the new iOS 11.3 fixed the issue (?)
I know that it's not Evernote Mobile because it wasn't updated since then.
I have to say that I also needed this feature many times. There are many workarounds, but having it implemented in evernote would save us a lot of time. I hope it will be implemented in future versions.