@export_category breaks export var tooltips

[aaandreeew]

Godot version

4.0 beta 4

System information

Windows 10 (x86_64), Vulkan, Intel Core i5-8265U with UHD Graphics 620 (31.0.101.2111)

Issue description

Edit: Clarified some language

Export variables can have editor tooltips set by preceeding their declaration with ## This is a tooltip. This doesn't work when the export variable is contained within a custom category like @export_category('Category')

(My screenshots don't have a visible cursor, sorry)

Works fine here, out of categories:

Doesn't work for export variables in categories. Tooltips still work for export variables outside of a category:

Steps to reproduce

1. Create a new project and attach a script to the scene tree root (this is the quickest, but this bug applied to any other nodes I had)
2. Create some export variables and annotate them like ## <annotation here> on the line before each. Note how tooltips appear properly.
3. Create an export category with @export_category('<category name>') on a line before. Note how tooltips won't appear for export variables in the export category.

Minimal reproduction project

Editor Tooltips Bug.zip

Created in Godot 4.0 beta 4

[YuriSizov]

Duplicate of #64432.