Description:
"Exit Full Screen" button is getting displaced to extreme top left corner under 'Pinned tab' of any Timeline.

Build Details:
Version: 7.13.0-Snapshot Build
Build: 39703
Commit: c0c6272
Artifacts: https://artifacts-api.elastic.co/v1/search/7.13.0-SNAPSHOT

Browser Details:
All

Preconditions:

• Kibana Environment should exist.
• Endpoint security should be installed
• Pinned event should exist under Pinned Tab of any timeline

Steps to Reproduce:

1. Navigate to 'Timeline' tab of security.
2. Create a timeline by clicking on 'Create New Timeline' button
3. Now, click on pin icon and mark few events as pinned. Notice, that pinned events are now getting reflected under 'Pinned Tab'
4. Switch to 'Pinned' tab and click on 'Full Screen' icon
5. Observe that Exit Full Screen button is getting displaced to left top corner.

Impacted Test case:
N/A

Actual Result:
"Exit Full Screen" button is getting displaced to extreme top left corner under 'Pinned tab' of any Timeline.

Expected Result:
"Exit Full Screen" button should be displayed on the top of events table in Full screen mode.

What's working:
This issue is not occurring for other tabs like Query Table, Correlation, Analyzer etc.

What's not working:
This issue is occurring for only in 'Pinned' tabs of Timeline