We discovered a pretty weird and quite delightful bug in macOS builds using Metal as the renderer yesterday. It happens on all builds (Windows, Linux and macOS) with all renderers (OpenGL, DX11 and DX12) but Metal looked the best:
https://www.youtube.com/watch?v=y-ZZcvWBR3M
If you remember the old days with four color CGA graphics adapters then this is pretty nostalgic :)
For the technically inquisitive: This happened when the engine only gave the shaders 7 lights instead of the mandatory eight and only happened on very rare occasions. So the eighth light in the scene has some other random settings for it's position, color, brightness etc.
We also fixed a bug where we rendered very expensive particle systems when they were offscreen... so yeah, this will help people who were dropping frame rates a little.
Have fun exploring and destroying and we hope your summer holidays are going great.
dazza.