Comment text field dissapears after 30 seconds

Checklist

Summary

When I want to add comment on Merge Request from the diff view text field disappears after 30 seconds.

Steps to reproduce

  1. Open the Diff view on a Merge Request
  2. Try to add a comment
  3. Wait a bit

What is the current bug behavior?

The text field disappears after 30 seconds.

What is the expected correct behavior?

The text field is shown until I close it.

Relevant logs and/or screenshots

bug

Possible fixes