Not sure if this is the appropriate place...
I'm having an issue using RadiantCMS (unofficial branch) on Ruby 2.6 with Nokogiri 1.10.9 and Radius 0.7.5
In my case the selector is comming from Tag-Attribute which is a Radius::OrdString which breaks the Nokogiri-Selection:
selector = Radius::OrdString.new('div')
Nokogiri("<div></div>").css(selector).size
=> 0
While this works:
selector = 'div'
Nokogiri("<div></div>").css(selector).size
=> 1