Yes again, last night I was hit by this ancient bug which is just ridiculous. Deck A was reported as "Locked" when no track was playing. I used the age-old technique of unchecking the settings option to allow loading a track into a locked deck.
Is there actually a better workaround for this bug? I'm aware it has been reported many times for years now. Mine was Deck A (I think it always is for me) and I'm using an S4 Mk3 and running TP3.6.2 on macOS 11.6.8. I know the Official Support advice will tell me to upgrade which has never fixed this bug in all my time using Traktor. I will upgrade now that all my gigs are done for this year but I bet it will happen again sometime soon :-(