Creating or customizing template that uses BaseTemplate

I have made some customizations to the GoldenLayout Template and am trying to figure out a better way to use it than referencing a forked Panel repo. I’m currently not able to do this, because of this commit:Cache templates loaded from string by philippjfr · Pull Request #5854 · holoviz/panel · GitHub

This is also affecting another user with a custom Template, Custom template don't work anymore.

Is this the recommended method for creating a custom Template?

This looks to be resolved, but not yet in a release, Custom template don't work anymore · Issue #6275 · holoviz/panel · GitHub.