Cannot Activate Discordance of the Tistina in GY

YGO Omega Bugs
1

  1. Bug description
    Cannot activate Discordance of the Tistina effect in grave

  2. Bug reproduction steps

    Send discordance to grave through any means or have in grave on a turn its effect to banish a card(s) from opponent’s GY has not been used. Must also have a Tistina monster in GY

  3. **

Screenshot from test room but bug does also occur in ranked.

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  1. Expected behavior
    Should be able to banish discordance as cost to add a Tistina monster from GY to hand

  2. What OS are you using
    Windows-10