Adding a reaction shows two tooltips

Summary

Adding a reaction in Firefox seems to show two tooltips on hover. On page reload, everything is "normal" again.

Steps to reproduce

• Add reaction to comment
• Hover over the emoji added

Example Project

N/A

What is the current bug behavior?

Two tooltips are displayed for new reactions.

What is the expected correct behavior?

Adding a reaction adds the same tooltip as is shown on page load.

Relevant logs and/or screenshots

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

N/A

Results of GitLab application Check

N/A

Possible fixes

Unknown.