Locked Legends suddenly unlocked for a single round

Product: Apex Legends
Platform:PC
Please specify your platform model. PC
AMD or Nvidia Model Number N/A
Enter RAM memory size in GB N/A
What is your gamertag/PSN ID/EA Account name? HopefulGoddess
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Are you using any software with an overlay? No
Which Legend were you playing (if applicable)? Ash
Which Legends were your squad mates using (if applicable)? N/A
Where did the issue occur? Loading into the match from the lobby
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. Not in game/loading into the match
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. Loading into the game/Legend selection screen
Did your squad mates also experience the issue? No
How many matches had you played in a row before the issue occurred? N/A
When did this happen? (dd.mm.yy hh:mm) Yesterday (24/11/21)
How often does the bug occur? Rarely (0% - 9%)
How severe is your issue? Little to no impact to gameplay
What happens when the bug occurs? Characters not previously bought/unlocked are suddenly unlocked. I do not own Fuse/Seer/Ash, and yet everyone showed up as free one match, and I was able to select (and play as) Ash w/ no visible problems.
What should be happening instead? Characters I don't own should be locked... it's weird, but it was kind of a cool test run for when I buy Ash, lol! (I won't do it again, even if it happens again, though..)
Steps: How can we find the bug ourselves? Not sure... it just randomly happened one round and not the next.. Sorry. :/

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Characters not previously bought/unlocked are suddenly unlocked. I do not own Fuse/Seer/Ash, and yet everyone showed up as free one match, and I was able to select (and play as) Ash with no visible problems. 
Don't know what caused it, or if it'll happen again. I've had similar issues happen in other games, but I know what happened in those... If this does occur again, I won't click the characters I don't own, I swear; I just wanted to see if it would actually go through. Don't know if anyone else has had the issue; it didn't affect my squadmate.