How to correct the popup placement in create group stage bar?

Hi,

PFA. The entire popup isnt visible for the first issue. Please guide how I can resolve it. The steps to reproduce are as below.

1. Open the sandbox link of community portal given in the details.
2. Click on Participate and select Communities option.
3. Click on Create group tab and then select partner tab.
4. Move the mouse over correct / tick icon available above text 'Group details'.
5. Observe the information pop-up goes out of the screen.

Actual Result :
Select Group Category information pop-up goes out of the screen.

Expected Result :
Information pop-up should be diplayed within the screen limit.

Browsers Used : Google Chrome (49.0.2623.110 m), Internet Explorer (11), Mozilla Firefox (45.0.1), Opera (36), Microsoft Edge (20.10240), Safari (5.1.7)

I dont have the FTP details at this point, but the same issue is observed on the easysocial demo. I hope you can give me a solution to it.

Thanks!