godot: Custom class (`class_name`) not working with 3.2.3 RC3, but it works in RC2

Godot version: 3.2.3 RC3

OS/device including version: Windows 10

Issue description: I found some weird difference between RC2 and RC3 that I can’t figure out.

My HTML5 build crashes when a custom class is included, and complains “identifier “SafeNum” isn’t a valid type (not a script or class), or couldn’t be found on base “self”.”

The class DOES work in RC2 (and everything before that), so this must be a new bug.

Steps to reproduce: Just include my class file (that I pasted below), and use it like this: var diamonds:SafeNum = SafeNum.new(1)

Minimal reproduction project:

class_name SafeNum
extends Reference

var _num = null
var _permutator = null
var _permutation = null

class DynNum:
    var _num:float
    func _init(n):
        _num = n
        pass
    func getValue():
        return _num

func _init(n):
    _setUnchecked(n)
    pass

func _setUnchecked(n):
    _num = DynNum.new(n)
    _permutator = DynNum.new(randf()+1.0)
    _permutation = DynNum.new(_num.getValue() * _permutator.getValue())
    return self

func _setChecked(n):
    if _permutation.getValue() != (_num.getValue() * _permutator.getValue()):
        printerr("MEMORY CHEAT DETECTED")
    return _setUnchecked(n)

func getValue():
    _setChecked(_num.getValue())
    return _num.getValue()
    
func setValue(n):
    return _setChecked(n)
    
func plus(n):
    return _setChecked(_num.getValue() + n)

func minus(n):
    return _setChecked(_num.getValue() - n)

func multiply(n):
    return _setChecked(_num.getValue() * n)
    
func divide(n):
    return _setChecked(_num.getValue() / n)```

Bugsquad edit (keywords for easier searching): named class