I don't usually pre-wash my fabrics.
Well, we left town about 5 pm Monday and got back at 10 last night. I just noticed this about 4:30 (45) min ago. My husband was in this room and didn't notice it this morning, but he doesn't always notice things, he didn't walk next to my sewing machine.
It's possible that it's only today.
I did see a small water puddle on the floor a few days ago. I looked all around and didn't see where it came from. I guess I should have checked closer.
Fortunately it did not drip onto my Bernina sewing machine