Plane light with small width and big length creates weird lighting issue.

[Vizioen]

I don't have much time to report this issue but I want to point this out anyway hopefully you guys can reproduce it. I have a scene with some plane light that cast weird lighting artifacts. See attached. Dimensions are 900 x 0.6 cm. When I change it to 900 x 0.8 cm the issue disappeared. It's only visible in the lighting render element.

[hermit.crab]

Could you send the scene to support@chaosgroup.com so we can take a look? Mention this thread in the e-mail as well.

[Vizioen]

I send it, but my statement that changing it to 0.8 cm fixed it was wrong it just move the 'shadowy' artifact a bit. That made me a little unsure of it being a bug though.

[hermit.crab]

Thanks for the report and the provided files. I am able to reproduce the issue and it is indeed caused by one of the long and thin lights. I've logged the issue (internal bug-tracker id: VMAX-9634) for developer investigation.

[Vizioen]

Great thx Aleksandar.