I've got this working on my fork and added an option to automatically follow the cursor in the syntax tree window.
https://github.com/c0dycode/Rossynt

Do note, that I have no prior knowledge in plugin development and kotlin - so it probably is a hacky temporary solution and hence no PR.

@GitHubPang in case you're interested, feel free to copy and change code however you like. :)

@c0dycode thank you so much for patching it for 2023.2
any chance of doing another build/release for 2023.3?
i'm using rider 2023.3 EAP 8 which is needed for working with .net 8 and really missing this plugin 😭
hope you can help 🙏

@dj-nitehawk Done :)

I just gave it a very quick try and it seemed to work.
Feel free to let me know if you run into any issues and I'll try to have a look :)

@c0dycode brilliant! it works!
you are a lifesaver mate... highly appreciated 🙏🙏🙏