Buttons are not pressed on Google Maps. What could be the problem?

Question

Google Maps

Guys, we are doing a social project about stray cats.
The problem with labels on cards
is the map itself - catsguide.games2people.com/places/?showas=minimal
Click on any label that we added - a pop-up window opens.
We click on the "More info" button - and nothing happens, it does not go to the page of the object itself.
Moreover, I noticed such a bug, if under the More info button on the map there is some object from the Google map, but the button is pressed and goes to the page. Here I tried to draw on the screenshot what I mean: https://yadi.sk/i/vXS1f-3I3SyaTS
How to be, how to fix it?