ChromeDriver raises an 'Element is not clickable' exception
This can be caused by the small delay between ChromeDriver determining the location of an element to click and actually clicking on the element. If the element is moving (for instance because another element has loaded and caused the page to reflow) it is no longer at the coordinates that ChomeDriver captured and it tries to click in the wrong place, causing this error.
This behaviour is due to the ChromeDriver implementation (there is an issue tracking a fix in ChromeDriver itself).
You can use explicit waits along with a custom expected condition to wait until an element has stopped moving before clicking.