Submit button is not working normally for Interview Feedback submission

We are facing an odd issue where Interviewers are clicking the 'Submit' button and Interview Feedback is not getting submitted, the page just keeps still.

Current behaviour - Affected users have to close the pop-up window, reopen the Interview Feedback submission request Worklist notification (they are trying multiple times) and hit the 'submit' button time and again. Sometimes, their feedback get submitted, sometimes the 'Submit button just do not work.

Anybody else facing this ?