[3.6] Cannot drop file into exported GDScript variable

[zuiaiyangyang3]

Tested versions

In Godot 3.6, in the box created by export var a:GDScript, scripts cannot be dragged in and referenced.

3.5.2 No problem

System information

win10

Issue description

extends Control



export var a:GDScript
func _ready():

	pass # Replace with function body.

Steps to reproduce

1

Minimal reproduction project (MRP)

1

[matheusmdx]

Bisected to commit 4951f50 from pr #70185, @KoBeWi

[rsubtil]

Still valid in v3.6.stable