Hi,
In admin-ui-styles module we keep both .less and .css files [1]. CSS is
rendered from the less source. Gabriel edits less files only, then
compiles the CSS with it and provides us both. I don't see a reason to
keep both .css and .less files in the git.
I suggest deleting CSS files which are created from less templates from
git and use the less compile maven plugin [2] to compile them. I've just
tried this approach and it works.
Viliam
[1]
https://github.com/keycloak/keycloak/tree/master/admin-ui-styles/src/main...
[2]
https://github.com/marceloverdijk/lesscss-maven-plugin