If you’re using recorder trigs, you can p-lock recording sources on REC1 setup, so what you might’ve done is had input A and SRC3 selected at the same time.
There was also known bugs with REC setup not changing with parts properly.
I tried to recreate with fresh project on 1.40A and it was no longer an issue, but it has not been documented as fixed. If it’s not sounding right, try nudging the sources in rec setup (A to B, then back to A).