1. Glossiness bug.
3 files attached.
-Glossiness 1 (correct)
-Glossiness 0.99 (wrong)
-Glossiness 0.99+caustics (correct)
Seems like that happens in all 1.5 daily builds.
2. Denoise + render elements active (AO, Mask, Beauty) cause crash at least in latest daily build
Both happened in more complex scene but can be recreated in such simple (plane, box, sphere, phys camera and white background).