Description of problem:
As summary

Version-Release number of selected component (if applicable):
https://maitai-bpms.app.qa.eng.nay.redhat.com based on BPMS6.0.0

How reproducible:
80%

Steps to Reproduce:
1. Login maitai-bpms site with Safari browser on Mac OS.
2. Open home page, then switch each tab.

Actual Result:
One black line shown on the Help window on Safari browser as snapshot.

Expected Result:
All page shown without exception.

Additional info: