My material editor doesn't show any node previews

I’m trying to follow this tutorial
However, my material editor doesn’t show any node previews (for example the Linear gradient passed in the Sine), which makes it hard to see if what I’m doing works. I’ve enabled Live Preview, Live Nodes, Live Update, but still no dice. Any idea why this is happening?

Hi Mechanicarts

Thank you for submitting a bug report. I have reproduced this issue and logged a report for it here You can track the report’s status as the issue is reviewed by our development staff. Please be aware that this issue may not be prioritized or fixed soon.


Wow, I did not expect to encounter an actual bug so close to the interface!

As a quick workaround, I’ve managed to get my previews working by right clicking my last node and clicking in order “Start Previewing Node” > “Enable Realtime Preview” > “Stop Previewing Node”. Any other sequence will simply not work.
EDIT: I forgot to say this will start previewing all nodes connected to it, provided they have realtime preview enabled.

This works.