When I go edit it a post it just deletes it instead.
Yes! Came to post this.
I thought it was my fat fingers hitting the delete button by mistake but I've been extra careful and replicated it several times.
I'm using Chrome for Android 5.01 on a SM910F (Galaxy Note 4).
If I click edit it goes to the edit screen but as soon as I touch the message text area it either just returns me to the thread with my message deleted or occasionally (not recently) if gives me an error along the lines of "invalid post - tell the admin" and when I go to the thread my message is deleted.
As someone who obsessively reedits his posts this is really winding me up.