[Bug] Comment disapears after scrolling uo

I guess I found a Bug, while commenting on an larger comment:

To recreate:

• Find langer comment
• Start to write own comment
• scroll up to read something in original comment
• copy a paragraph for citing in your own
• scolling down to continue writing
• initial written Text is gone

Hope this helps If some questions occur feel free to comment.

Edit: Version 1.0.150