When using sticky notes in Firefox, any line breaks are lost when note is saved.

Create a sticky note in Firefox with the following text: 

"
This is a test

This is a test 2
"

When the pages is refreshed, the text changes to: 

"
This is a testThis is a test 2
"

Follow the workaround discussed here on Community: https://community.servicenow.com/message/672765#672765