Will update this post as we get more info. Wanted to let everyone know that we are aware of this and investigating.
5:05pm PST UDPATE: Fix has been pushed live to Xbox One that addresses this issue. Those of you that had unlocked Mirage and Caustic should be able to select them now in matchmaking. Thanks for your patience!
External link →You are still able to play them by pre-selecting them in the lobby menu. Just don't pick any other Legend in the selection screen.
Edit: The issue also seems to be present on PC & PS4.11:10 pm PST:
Thanks for updating with the troubleshoot! Glad there's a work around but we're still working on it.
The bug just started showing up on PC and PS4 but we figured out why and now we are resolving the problem on X1, PS4 and PC
This should be fixed on PC and PS4 as of 1110pm PST
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