class collapse inside inline not working any more

[omargawdat]

unfold: 0.40 django: 5.12 chrome: latest

description: the collapse inside inline isn't working anymore

code:

class WorkerInline(StackedInline):
    form = WorkerForm
    model = Worker
    fk_name = "company"
    fieldsets = (
        (
            "Personal Information",
            {
                "fields": (
                    ("first_name", "last_name"),
                    "phone_number",
                    "gender",
                    "image",
                    "packages",
                    "is_active",
                )
            },
        ),
    )
    filter_horizontal = ("packages",)
    classes = ["collapse"]

additionally when I tried to use tab = true it doesn't work when switching language english:

arabic:

[radzihcake]

same

[lukasvinclav]

Fixed in #870