no hover information displayed for ruby core

[Matus Kmit]

Hi

CocActionAsync('doHover') displays documentation for rails classes & methods but not for ruby-core.

In the autocomplete menu it is visible though.

What is the difference between these two commands? How to get the ruby-core documentation work for doHover too?

Thanks.

[Matus Kmit]

interesting finding:

Category.find(params[:category_ids]).map(&:children)

doesn't work, whereas:

[1 2 3].map(&:to_s)

works