Weird UI behaviour when selecting CollisionShape3D, Shape properties

### Tested versions

Reproducible in: v4.4.1.stable.mono.official [49a5bc7b6], 4.4, 4.5-beta4 and 4.5

### System information

MacBook Pro - Apple M3 Max - Sequoia 15.5 (24F74) (same problem also in Sonoma)

### Issue description

The problem with this is that I cannot ever edit the shape properties of a CollisionShape. The "dropdown" that is supose to appear when clicking in the choosen Shape, does not have anything inside.

### Steps to reproduce

* Create a new scene with a top level node of type `CharacterBody3D`
* `CollisionShape3D` has a child,
* In the `CollisionShape3D` properties on the `Shape`, choose any of the predefined shapes, for example `CapsuleShape3D`
* Click on it (CapsuleShape3D) to enter the shape properties, the only thing it happens is that the "dropdown" (sry dont know what is the name of that thing that opens to show the properties) does not have anything inside, so it only shows "dropdown" of 2 pixels in height.

This is a recording of what happens:

https://github.com/user-attachments/assets/365f7c12-97c5-425c-bf95-48c18a39372b

### Minimal reproduction project (MRP)

[Newgame.zip](https://github.com/user-attachments/files/22371377/Newgame.zip)