Since 0.9.7.1 it seems that this has been extended with an infinite procedural field.
Procedural galaxies have been around for quite some time, they have simply been enabled by default.
I assume you have this
When in game press F4 or hit escape and go to View in the main menu and uncheck the box under "Galaxies" that says "Procedural"
This will turn off procedural galaxies and leave you with this