I'm okay with an overall design that allows people to plugin the parts they need in order to be able to generically support a compile-to-javascript language, but to bake in support for one singular solution because its popular is simply bad engineering.

This is the problem with baking in support for frameworks with special cases in the codebase. You can never support all the frameworks. :-(

According to our understanding of the inconsistencies, the feature was likely trying to support too many edge cases. All caching strategies have weaknesses and eventually break down if the usage is not properly scoped.