"note that in evolution, "delete" means "mark as deleted", but does not move the
original email physically (this is like IMAP works). evolution's trash folder
is a virtual folder which displays all messages that are "marked as deleted"
from all the folders available.
"move" means "copy and delete the original", so you will always have a copy in
your trash (the original one)."
I am also linking the upstream bug here, but just for reference.
I am marking this as not-a-bug.
Upstream bug has the following comment:
"note that in evolution, "delete" means "mark as deleted", but does not move the
original email physically (this is like IMAP works). evolution's trash folder
is a virtual folder which displays all messages that are "marked as deleted"
from all the folders available.
"move" means "copy and delete the original", so you will always have a copy in
your trash (the original one)."
I am also linking the upstream bug here, but just for reference.