When using cura 5.7 I've noticed that the printer prints its 3 passes 3 height skirt, then lays down the first layer of the print. After the first layer is down, the printer again prints a 3 pass 3 height skirt then goes back to finish the print. Sometimes the 2nd skirt printed is of a smaller diameter and prints over the first layer.
5.7 does this on each of the 5 printers I'm currently using it for. A mix of elegoo Neptune 3 and 4's and an ender 3v3