Tested versions

• Reproducible in v4.3.stable.steam [77dcf97]
  (Unable to immediately test older versions)

System information

Windows 10 - v4.3.stable.steam [77dcf97] - Replicates on OpenGL

Issue description

If you set a StandardMaterial3D's texture to a 1 pixel thin texture and apply it to a mesh, it will render the mesh's material as completely black when playing via web.

In Editor as a single pixel thin texture:

In Desktop debug (Windows):

In web debug (Waterfox, but has been tested on Chrome, Edge, Firefox, etc, same result):

Steps to reproduce

• Create a StandardMaterial3D
• I set it to shading mode unshaded, but even if lit, it shows up as a slight dark grey/black.
• Apply 1px wide texture

Minimal reproduction project (MRP)

minimal-reproduction-project.zip