Tooltip on epic tree is broken

Steps to reproduce

  • add issues and child epics to epic
  • hover collapse / expand button of a child epic

Example Project

issue-reproduce/public_issues&2

What is the current bug behavior?

Tooltip is broken:

Screen_Shot_2019-11-19_at_18.29.13

Screen_Shot_2019-11-19_at_18.29.06

What is the expected correct behavior?

Tooltip looks tooltipy.