Why does it do that?

Hello Jacobf,

Have you tried to reset the browser or log out then log back in?

yes and it still does it

Might just be a glitch in the system.  I would advice going to the top of this page and click Report a Problem.   In the attachments option, attach photos of the missing comments, questions, etc.  I am sure they will be able to fix the problem soon.

Hope this helps.

Also, you should try sending a support ticket here if it is not changing.