*** redmine-4.1/app/models/issue.rb	2020-04-06 21:23:15.000000000 +0430
--- redmine/app/models/issue.rb	2021-12-02 20:37:21.797151377 +0330
***************
*** 683,694 ****
          end
        end
        workflow_rules.each do |attr, rules|
!         next if rules.size < roles.size
          uniq_rules = rules.values.uniq
          if uniq_rules.size == 1
            result[attr] = uniq_rules.first
!         else
!           result[attr] = 'required'
          end
        end
      end
--- 683,704 ----
          end
        end
        workflow_rules.each do |attr, rules|
!         if rules.size < roles.size
!           result[attr] = 'required' if rules.values.include?('required')
!           next
!         end
          uniq_rules = rules.values.uniq
          if uniq_rules.size == 1
            result[attr] = uniq_rules.first
!         else #supposed if size > 1 there is at least one 'required', because permissions are {nil, 'required', 'readonly'}
!           # in this priority
!           # nil = 0
!           # readonly = 1
!           # invisible = 2
!           # required = 3
!           result[attr] = 'readonly' if rules.values.include?('readonly')
!           result[attr] = 'invisible' if rules.values.include?('invisible')
!           result[attr] = 'required' if rules.values.include?('required')
          end
        end
      end