Reverting exported values broken on tool scripts

[BanchouBoo]

Godot version

4.0.beta2.official.f8745f2f7

System information

Void Linux

Issue description

On tool scripts for resources, the revert button for exported variables doesn't appear, and on tool scripts for nodes in a scene, it only appears after saving and reloading that inspector (and then it doesn't go away even when you revert the value)

Steps to reproduce

@tool
extends Resource

@export var test: float = 0

@tool
extends Node2D

@export var test: float = 12

Minimal reproduction project

tool_export_test.zip

[adamscott]

Verified by @KoBeWi and me. We could reproduce.

[idomo1]

Looks like this is happening because the default value is being stored as an int

@export var test: float = 12 // Broken

If you change this to a float it works as expected:

@export var test: float = 12. // Working

Not sure whether it's intended that casting would happen here or a syntax error
Without the tools decorator it does seem to cast, so that's probably what's expected

[BanchouBoo]

Looks like this is happening because the default value is being stored as an int

@export var test: float = 12 // Broken

If you change this to a float it works as expected:

@export var test: float = 12. // Working

Not sure whether it's intended that casting would happen here or a syntax error Without the tools decorator it does seem to cast, so that's probably what's expected

This fixes the (and then it doesn't go away even when you revert the value) part, but the rest of the problems are still there.

[idomo1]

The (and then it doesn't go away even when you revert the value) part has been fixed by #69416. The rest of the issue is still valid.

[dalexeev]

Related/duplicate of:

• Exported typed variables in a tool script have wrong initial value if not initialized #62363

[akien-mga]

Consolidating in #62363.