"Update published page" dialog overlaps the Update button on Windows browsers

Summary

When Collaborative Editing is on and you're editing a page the "Update published page" dialog overlaps the Update button itself making it hard to click the Update button to save the changes.

Environment

Confluence Cloud
This could only be reproducible on all browsers running on Windows 7 (IE11, Chrome and Firefox)

Steps to Reproduce

1. Have Collaborative Editing enabled
2. Access a page and click the Edit button
3. Hover the mouse over the Update button

Expected Results

The dialog is completely above the button

Actual Results

The dialog overlaps the Update button

Workaround

No workaround on Windows