On macOS with 6.0 RC1 there is no background picture in the install folder/package.
Steps to Reproduce:
1. Download 6.0 RC1 install dmg for macOS
2. Run it
The folder that opens, is without the background picture.
Background picture with LO logo should be visible.
User Profile Reset: No
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:57.0) Gecko/20100101 Firefox/57.0
Created attachment 138589 [details]
DMG opens without background picture.
Confirming for RC1, no issue with B2
No repro with RC3. Looks like WFM
I am confirming that and closing as fixed.