Repository graph - commit popup sticks when scrolling

Summary

I was viewing the repository graph and hovering one of the commit points and scrolled while hovering. This caused the popup to stick on my screen and I was unable to remove it without refreshing the screen.

Steps to reproduce

Go to the repository > Graph, hover one of the commit dots and scroll down without moving the mouse.

Example Project

No example project needed. All of my repositories reproduce this issue. Yours probably will too.

What is the current bug behavior?

The popup from hovering a commit dot sticks. When scrolling the other commit dots popup too and overlaps with already open commit dots.

What is the expected correct behavior?

On mouse exit event of the commit dot the popup should disapear and the next should display.

Relevant logs and/or screenshots

Picture of bug in graph

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

Expand for output related to GitLab environment info 
(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:env:info)


(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production)

Results of GitLab application Check

Expand for output related to the GitLab application check 
(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)


(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)


(we will only investigate if the tests are passing)

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)