Fix back button for check answers pages

app/controllers/case_logs_controller.rb

@@ -153,6 +153,7 @@ private
 
   def get_previous_page_path(form, current_page, case_log = {})
     return case_log.previous_page if case_log.previous_page
+    return request.referer.split("/")[-2..-1].join("/") if request.referer&.ends_with?("check_answers")
     return form.previous_page(current_page) if current_page
   end
 end

spec/features/case_log_spec.rb

@@ -229,6 +229,15 @@ RSpec.describe "Test Features" do
           expect(page).to have_current_path("/case_logs/#{id}/#{pages[index + 1]}")
         end
       end
+
+      context "when changing an answer from the check answers page" do
+        it "the back button routes correctly" do
+          visit("/case_logs/#{id}/household_characteristics/check_answers")
+          first("a", text:  /Answer/).click
+          click_link("Back")
+          expect(page).to have_current_path("/case_logs/#{id}/household_characteristics/check_answers")
+        end
+      end
     end
   end