Crash on project startup at cmd->post()

[RicardRC]

Godot version

4.0 master branch (2b0bf20) but has been like this for at least three days.
At (8c2beee) the issue was not present.

System information

Windows 10

Issue description

When opening my project, it crashes on "cmd-post()" with the following callstack:

And the following console output:

Godot Engine v4.0.dev.custom_build.2b0bf20dc - https://godotengine.org
Vulkan API 1.2.162
ERROR: GENERAL - Message Id Number: 0 | Message Id Name: Loader Message
        loader_get_json: Failed to open JSON file C:\WINDOWS\System32\amd-vulkan64.json
        Objects - 1
                Object[0] - VK_OBJECT_TYPE_INSTANCE, Handle 2019601913824
   at: VulkanContext::_debug_messenger_callback (drivers\vulkan\vulkan_context.cpp:157)
WARNING: GENERAL - Message Id Number: 0 | Message Id Name: Loader Message
        ReadDataFilesInRegistry: Registry lookup failed to get layer manifest files.
        Objects - 1
                Object[0] - VK_OBJECT_TYPE_INSTANCE, Handle 2019601913824
     at: VulkanContext::_debug_messenger_callback (drivers\vulkan\vulkan_context.cpp:154)
Using Vulkan Device #0: NVIDIA - GeForce GTX 1070
- Vulkan multiview supported:
  max view count: 32
  max instances: 134217727
- Vulkan subgroup:
  size: 32
  stages: STAGE_VERTEX, STAGE_TESSELLATION_CONTROL, STAGE_TESSELLATION_EVALUATION, STAGE_GEOMETRY, STAGE_FRAGMENT, STAGE_COMPUTE, STAGE_RAYGEN_KHR, STAGE_ANY_HIT_KHR, STAGE_CLOSEST_HIT_KHR, STAGE_MISS_KHR, STAGE_INTERSECTION_KHR, STAGE_CALLABLE_KHR
  supported ops: FEATURE_BASIC, FEATURE_VOTE, FEATURE_ARITHMETIC, FEATURE_BALLOT, FEATURE_SHUFFLE, FEATURE_SHUFFLE_RELATIVE, FEATURE_CLUSTERED, FEATURE_QUAD, FEATURE_PARTITIONED_NV
  quad operations in all stages

ERROR: Compiler bug: unresolved assign.
   at: GDScriptByteCodeGenerator::write_assign_with_conversion (modules\gdscript\gdscript_byte_codegen.cpp:816)

The last error that was listed has the following callstack, not sure if related:

At that function, the p_target is of mode "local variable" and type null, and the p_source is of mode "temporary" and type null.

Steps to reproduce

Try to open my current project.
Does not happen on new projects.

Minimal reproduction project

Not yet.

[RicardRC]

Bug still present as of 8ffb631.
Some locals I think could help:

Seems like the problem is with the "unsigned int vector deleting destructor".

[RicardRC]

Looks like the problem exists only when I preload a packed scene that has a subviewport. Changed the script from preload to load and now this does not happen.

[akien-mga]

Can you still reproduce this in 4.0.3 and 4.1-beta3 or later?

If so, could you provide a reproduction project?

[YuriSizov]

I'm going to close this as there isn't any new information or corroborating reports. If you still can reproduce the issue with Godot 4.2 or the current master, please let us know and we can reopen it.