Surface the decal is being projected against displays as pure black (Unity LTS 2019.4.13f1/URP 7.3.1)

[WarpZone32]

The decal works normally at first, but attempting to save the scene causes the ground to turn black. If there is only one decal in the scene, the decal displays normally but the "whitespace" around it on the gameobject(s) it's colliding with is black. Adjusting the color or any other details of the material somehow "refreshes" the display and makes it look normal again... but only until you save the scene again.

Graphics card is an AMD Radeon R9 200 series, if that helps.

[Watcher3056]

Same

[tjm35]

I had this problem when using the "Multiply" blend mode, and tracked it down to the "_ZeroColor" shader property not being correctly serialised so its value was reset when saving. Making this change locally fixed the problem for me.