"Run instances" uses default main scene instead of main scenes defined by feature tags

[vitawrap]

Tested versions

• v4.4.dev3.mono
• v4.4.dev3

System information

Godot v4.4.dev3.mono - Windows 10.0.19045 - Single-window, 2 monitors - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 4060 Ti (NVIDIA; 32.0.15.6094) - AMD Ryzen 7 7800X3D 8-Core Processor (16 threads)

Issue description

Instances defined in "Run instances" use default main scene instead of main scenes defined by feature tags, when those feature tags are applied to the instances.

Steps to reproduce

• Define export targets with custom feature tags
• Add project settings overrides for application/run/main_scene for each feature tag
• Add respective feature tags to each instance in Debug > Customize Run Instances...
• Run in editor
• See both instances using the default main scene

Minimal reproduction project (MRP)

testfeaturescenes.zip

[dustdfg]

I confirm that overriding application/run/main_scene doesn't lead to running another main scene but at the same time it raises a question. What scene should be run if you defined two features for an instance while both of the features override main scene?