Testing version:
2.0 (11356), iOS
What were you doing:
Entered the note from the filtered-by-tag view. Edited the note, removed the tag (by which the note is filtered/found). Stopped editing (closed the on-screen keyboard).
What happened:
Note disappeared from the view (closed).
What did you expect to happen:
I expect the note to stay in the view until I decide to stop displaying it.