Painting grass on landscape not behaving as expected & not visible in PIE

The Grass system / painting is not behaving correctly in Editor. It also disappears when we use PIE. We’ve not seen this issue previously - only since 5.6 / 5.7 upgrades.

Steps to Reproduce
Using a new level WP or not

With a simple material applied to the landscape that has an output to a grass layer.

When painting - we are getting incorrect results over landscape cells as shown in the video.

Hi Peter,

This looks like a major bug but we’re not seeing this on our side, nor was it reported since 5.6 was released. Would you be able to send us a minimal project exhibiting the issue so that we can investigate what’s going on?

Cheers,

Jonathan

Sorry for the delay on this.

It looks like this might be from an internal change to improve editor performance, where landscape grass updating was disabled. I’m waiting for internal dev team to confirm this is the case.

Hi Peter,

I’ll now resolve this ticket. Don’t hesitate to reopen this thread if there are further developments on your side or think that there’s something that is not working in the engine.

Cheers,

Jonathan