Plot region line alignment

[Manuel Ferraro]

Hi,
I noticed an issue with the plot region line in graphs. Compare the two graphs:

sysuse auto
scatter len wei, scheme(s1mono) name(default, replace)
scatter len wei, scheme(s1mono) plotregion(lalign(center)) name(aligned, replace)

If you look close, the axis lines in the first graph appear thicker compared with the plot region line, and the attachment between the two is not perfect. I tried to add the center alignment in my custom scheme file by adding the following:

linealignment plotregion center

But it doesn't work. Any idea how to permanently solve this?

Thanks,
Manuel