I went to your feed and it doesn't happen here on UNA. I'm using Firefox as a browser.
The like button is the only button slow to register on the site. It takes a little over 10 seconds for it to register the click.
It happened on my site right after the update and it also does it on mobile. And that's the only one that's slow on mobile, the rest work fine.

I've attached a video to show you how long it takes. I count it by moving the mouse pointer right and left to count the seconds.