Platform, device version and operating system
What you were expecting to happen, and what actually happened
I was temporarily in a guild that was working on Portal 8 or 9. I left that guild (before any new tiers were reached; and no raid boss rewards were available to be collected) and moved to a guild working on Portal 5. We just completed Portal 5 a few moments ago, I was an active contributor, but it says I already collected that reward. Would it be possible to have the Portal 5 rewards mailed to my account?
How often does this happen? When did it begin happening?
This happened approx. 30 minutes before the timestamp of this message.
Steps to make it happen again
Unknown, cannot replicate for obvious reasons. I suspect this is because I received some completion flag due to the current higher-tier status of the previous guild.