Have a look at the end line option in your composite settings.
I tend to set the end line pen the same as the skin lines, and if you can't or don't want to use the same pen (colour), choose another that at least has the same width.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11