Introduced in 2.217+ I believe.
There is no spacing between form errors on the setup wizard, as shown in the picture:
There should be at least 0.5rem of spacing between them.
I did some testing on a 2.204 image and found out this:
It seems that the margin was being set as inline styles, and not anymore. I'd suggest creating a css class for this and add it on the pluginSetupWizard.less file.
https://github.com/jenkinsci/jenkins/pull/4629