Here's something else that came out in the wash - the writing on my label.
It's only the 3rd time that I've hand written my label, using a Micron Archival Ink pen. They're supposed to be waterproof and the manufacturer even notates its usage on fabrics. I used it on my Brown Bear Quilt and washed that one before gifting it and don't recall having this issue. I also used it on my Tonga Treats table runner but I never washed that one so I hope it doesn't do the same thing.