In a fresh install of Jmeter 5.1.1 (on Ubuntu 16.04) some functions are not present:

1. There is no "Monitor result" in the listener choices
2. There is no drop-down menu in the "view results tree" to view the response data as html, json, text, xml, etc.

Both are not present at all. 

Thanks a lot for any hint on how to get this fixed. 

Regards, 
Fabianus