Legendary Finishers Won't Count Towards Daily Challenge

Product: Apex Legends
Platform:Microsoft XBOX One
Please specify your platform model. Microsoft Xbox One S
What is your gamertag/PSN ID/EA Account name? RANDPLAYER
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Which Legend were you playing (if applicable)? Mirage
Which Legends were your squad mates using (if applicable)?
Where did the issue occur? In a match
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. Various parts of the map
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. Performing a finishing move on an enemy
Did your squad mates also experience the issue? I don't know
How many matches had you played in a row before the issue occurred? 0
When did this happen? (dd.mm.yy hh:mm) Today - July 7th, 2019, Aprox 6pm GMT+2
How often does the bug occur? Every time (100%)
How severe is your issue? Little to no impact to gameplay
What happens when the bug occurs? When performing a finisher with in this case Mirage and his legendary finisher, progress towards a daily challenge of "Perform 1 finishing move with Mirage" will not count. Switched to his "First finisher" and played another game, and that time it worked.
What should be happening instead? While performing a finisher on an enemy progress should be made regardless of finishing move.
Steps: How can we find the bug ourselves? Play as any character that needs to perform the daily "Perform X finishing moves as [ X ]" Play a game and execute an enemy.

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Before I tried the unthinkable of switching from my awesome finisher I tried the following but not every solutions;

- Getting the last kill as Mirage and an execution

- Only doing executions as Mirage

- Getting finishers with my own and other players kills

- Winning a game with only 1 kill (An execution)

Non of these worked until I switched to Mirages default finisher.