Quick fix for validation problem

frontend/src/store/modules/submission-notes.ts

@@ -147,7 +147,7 @@ async function submitFeedback ({ state }: BareActionContext<SubmissionNotesState
 
   if (Object.keys(state.updatedFeedback.feedbackLines || {}).length > 0) {
     feedback.feedbackLines = state.updatedFeedback.feedbackLines
-  } else if (feedback.score! < SubmissionNotes.submissionType.fullScore!) {
+  } else if (feedback.score! < SubmissionNotes.submissionType.fullScore! && !state.hasOrigFeedback) {
     throw new Error('You need to add or change a comment when setting a non full score.')
   }
   // delete those comments that have been marked for deletion