Bug - Light stripes on 3D grass near Billboards

[digipi]

When using Billboards and 3D grass, light stripes appear on the grass along these shields ...

[CamilleSarrut]

Hello Digipi,

I tried to reproduce with the latest version 2019.2.20052 on Mac OS X 10.12 and did not succeed.
Which version did you use ? On which platform ?

Could you send me your atla file zipped to reproduce the issue ?
You can send it by WeTransfer at sarrut@abvent.fr

Best regards,

[digipi]

I did not save this file. I sent a similar one, but there are also visible light streaks on the grass near the billboards.
Artlantis 8.0.2.20052

[CamilleSarrut]

Hi,

I got your file and could reproduce the bug, it comes from the Ambiant occlusion seen through the transparent part of the Billboard.
We have fixed this bug, but it won't be available until next version.
In the meantime, you can reduce the Ambiant occlusion setting or deactivate it.

Best regards,