Right-click, Find Usages often searches for the wrong symbol, namely the enclosing iterator rather than the selected symbol. In this code...

  class Huh

    def each_sorted
      s2 =  %w{cat elk dog bee ant}.sort
      s2.each {|str| yield str}
    end

    def strange
      each_sorted do |c|
        @yyy = 99
      end
      @xxx = 88
    end
  
  def initialize
    @xxx = 77
    @yyy = 66
  end
  
end

Right-click and Find Usages on the instance variables @xxx and @yyy.  The last three occurrences work fine, but the first @yyy inside strange searches instead for each_sorted.

This is probably related to the prior bug I submitted regarding proc and lambda, 190519