Reply and favorite buttons not working in activity stream

Hi. I have a couple of issues on the activity stream for the reply and favorite button.

1.) I tried to reply on one of the post in the "Activity" stream but it just refreshes the page and the reply box does not appear.

2.) When I click "favorite" in activity stream, I see a "refreshing circle" working but the "favorite" button did not change. However, if I go click another page and comes back to the "activity stream", then I see "remove favorite" button. Is it supposed to be like this? Shouldn't the "favorite" button change to "remove favorite" the moment I click the "favorite" button without having to refresh the page or go to another page and come back?

Please advise.

Thank you in advance for your help