Hello,
after my opponent played Hey Space Trunade i was able to chain 1 card, but not 2 other cards I had face down… He bounced the 2 cards i was not able to activate and won the duel.
Is there a bug regarding this card?
Do you have a replay?
Were they or you playing Angelechy?
As stated, without understanding as to the board state there was most likely no bug. We need way more information to be able to help you with this matter.