Syntax highlighting does not work with micro on the latest Tumbleweed version but it works as expected if I use the pre-built binary having the same version (v2.0.11) from GitHub repo.
I have tested this on both Konsole and Kitty terminals and the behaviour is same.
Also, this is off-topic but how can i request for an application (specifically a terminal file manager called lf to be packaged in the official repos of tumbleweed?
This is an amazing utility and is easy to package with clear packaging instructions on GitHub.