I was doing small batch brew and screwed up the mash temp, so I doubled the grain bill and then added more water of the appropriate temp from a small brew pot and got things rolling correctly.

Mash ended and I started transferring wort to the small brew pot. I realized what I did, killed the transfer and pulled a medium brew kettle out and set the transfer up again. I poured the small amount of wort from the small pot to the kettle and then started the transfer into the medium kettle. I put the small pot in the sink and cleaned it. Then sped up time for the transfer.

I didn't notice the kettle volume wasn't increasing (I watch the source during speed ups). At the end I found the medium kettle with just the small amount of wort poured in from the small pot and the pot was in the sink overflowing with wort.

An interesting state glitch I suspect.