Material previews in Slate Editor not updating when IPR is running

[Alex_M]

There's been a long standing issue with material previews in Slate Editor not updating when IPR is running which dates back to at least Vray Next. I was wondering if a fix for this is in the works. Or is it something that's impossible to implement?

[hermit.crab]

Some material changes, indeed, do not trigger the ME shader update. We do have the issue logged (internal bug-tracker id: VMAX-5462). Though a bit inconvenient, manually updating (right-click on a shader in ME > Update Preview) does fix the issue for upcoming changes.

[Alex_M]

Good to know this is being addressed, thanks! Just to let you know, I was working on the reflections of a very simple material and changing reflection value, activating Fresnel etc and preview didn't update. It's strange that sometimes it works, sometimes it doesn't.