Screen not clearing in transparent background

[DennisFan11]

Tested versions

v4.3.beta3.official [82cedc83c]

System information

Godot v4.3.beta3 - Windows 10.0.22631 - GLES3 (Compatibility) - NVIDIA GeForce RTX 2060 SUPER (NVIDIA; 31.0.15.5176) - Intel(R) Core(TM) i5-10400 CPU @ 2.90GHz (12 Threads)

Issue description

In transparent background, screen doesn't clearing

Steps to reproduce

gl_compatibility WorldEnvironment:background_mode: canvas, glow_enabled = true rendering/viewport/transparent_background = true rendering/viewport/hdr_2d = true

Minimal reproduction project (MRP)

background_test.zip

[AThousandShips]

Related:

• https://github.com/godotengine/godot/issues/47818