Hi @MrsAffects, thanks for the report! Unfortunately we found the cause of this bug in the PC version after we had updated the console. We’ve already applied a fix and it will be fixed in the next update. The cause we found was entering a Casual PvP pre-battle screen and then going to Guild Wars, regardless of whether you fought the battle or not. It may have only been reset by entering a Ranked PvP match I believe. If you didn’t look at any Casual PvP opponent before your Guild Wars battles, let us know and we’ll make sure our fix works in that instance too.
We did watch the video you supplied on your account (thank you for that!), and couldn’t quite tell if the above steps applied to you, so just letting you know. Until the update is out though, we would recommend that if this does happen that you set the difficulty back to normal for the fight.