Math followed by normal text misrender

Hi there, I’ve got the following problem:
I want to write a legend for my Formula, where I describe all the symbols and variables.
However writing something like
* $$\Gamma$$ is the capital of Great Britain

doesn’t lead to the desired render of a single Gamma character followed by regular text in the preview. Is there a way around this?

* $\Gamma$ is the capital of Great Britain

https://github.com/laurent22/joplin#math-notation

Thank you very much!