Often I search for an email that is Archived, and then want to move it back into the Inbox. When I press Move, I am given a list of all the folders I can move the message to, but Inbox is not in the list.

However if I find the email manually in Archived, rather than searching for it, then tap Move,  Inbox does appear in the list.

I believe this is a bug in the android app. I should be able to move a message from Archived to Inbox, regardless of whether I accessed it from Search Results or from Archived.