Cannot "Save" after trimming in Voice Memos
The Voice Memos app appears to be completely bugged across all devices. I've test this on an iPhone SE and iPad 2018 running iOS 12, as well as a Macbook Pro running Mojave.
The issue is that once you have edited your voice memo (either by deleting or trimming it), the "Save" button remains greyed out. There is nothing you can do.
Additionally the "Trim" function doesn't work as expected: It doesn't remove audio from left of the orange markers, only from the right.
Basically, outside of making or playing recordings, the Voice Memos app doesn't work at all.
Screenshot showing that "Save" is not selectable (after making an edit):
iPhone SE, iOS 12, Voice Memos app