Quiviut; Maybe creeping charlie?
https://www.thespruce.com/how-to-kill-creeping-charlie-2131200
I think you already know how to deal with it!
That’s it!
I also think I heard my brother mention “Creeping Charlie” ... he’s got some big patches near his lawn.
My raised bed dirt is very soft/loose - adding mulch every year helps a lot. It makes pulling weeds a lot easier with a better chance of getting all the roots. I think I did a pretty good job yesterday, but I’ll likely have a couple pop up in the future. I’m still puzzled how it’s just in that one bed that has been pretty clean for at least a year or two.
Last year, I sprayed in the spring with the vinegar/Epsom Salt/detergent solution. I have never had it work before, but I sprayed again in a couple of days & it REALLY knocked out any weeds while they were small. I used pine needle mulch and I had the “cleanest” beds ever ... pulled a weed here & there, but never had to sit down for a few minutes to truly “weed”. I hope the same will happen next year.
Thanks for the info/weed ID!