### Godot version

v4.0.3.stable.arch_linux

### System information

Arch linux  - OpenGL API 4.2 (Core Profile) Mesa 21.3.9 Amber - Compatibility - Using Device: Intel Open Source Technology Center - Mesa DRI Intel(R) HD Graphics 2500 (IVB GT1)

### Issue description

I wrote a simple colorize shader:
```
uniform sampler2D color_map;
void fragment()
{
	vec2 uv = COLOR.rg;
	COLOR.rgb = texture(color_map, uv).rgb;
}
```
![20230614_21h26m15s_grim](https://github.com/godotengine/godot/assets/68549456/636c00f8-09e3-4be4-9784-787a3c35ae63)

But when I change the uniform parameter in the editor, it turned into this
![20230614_21h07m45s_grim](https://github.com/godotengine/godot/assets/68549456/0ac2430d-33f5-4c4a-8cd0-bd2f76b575cf)

However, this issue does not appear on Vulkan renderer (Foward+ and Mobile) 

### Steps to reproduce

Change value in the gradient in the shader parameter.

### Minimal reproduction project

[shader-bug.zip](https://github.com/godotengine/godot/files/11746761/shader-bug.zip)

}
void TextureStorage::decal_set_distance_fade(RID p_decal, bool p_enabled, float p_begin, float p_length) {
}
void TextureStorage::decal_set_fade(RID p_decal, float p_above, float p_below) {
}
void TextureStorage::decal_set_normal_fade(RID p_decal, float p_fade) {
}
AABB TextureStorage::decal_get_aabb(RID p_decal) const {
	return AABB();
}
GLuint TextureStorage::system_fbo = 0;
void TextureStorage::_update_render_target(RenderTarget *rt) {
	
	if (rt->size.x <= 0 || rt->size.y <= 0) {
		return;
	}
	
	if (rt->direct_to_screen) {
		rt->fbo = system_fbo;
		return;
	}
	Config *config = Config::get_singleton();
	rt->color_internal_format = rt->is_transparent ? GL_RGBA8 : GL_RGB10_A2;
	rt->color_format = GL_RGBA;
	rt->color_type = rt->is_transparent ? GL_UNSIGNED_BYTE : GL_UNSIGNED_INT_2_10_10_10_REV;
	rt->image_format = Image::FORMAT_RGBA8;
	glDisable(GL_SCISSOR_TEST);
	glColorMask(1, 1, 1, 1);
	glDepthMask(GL_FALSE);
	{