Rows with only hidden inputs are displayed in admin forms

[jackh-step]

Rows containing only hidden inputs in admin forms are being displayed despite having the "hidden" class.
This is related to "base.css" file containing the "hidden" class selector being shadowed.

[abidibo]

Hi @jackh-step please provide a sample code with just Model and ModelAdmin. Thanks

[jackh-step]

Hi @abidibo, thanks for responding, here's an example for reproduction.

class MyModel(models.Model):
    field = models.BooleanField()
    hidden_field = models.BooleanField()

class MyModelForm(forms.ModelForm):
    class Meta:
        model = models.MyModel
        fields = "__all__"
        widgets = {
            "hidden_field": forms.HiddenInput()
        }

@admin.register(MyModel)
class MyModelAdmin(admin.ModelAdmin):
    form = MyModelForm

In the above admin, even though the bottom row only contains a hidden input, it is still displayed for the reasons mentioned previously.
The "hidden" class is applied if a fieldset's line has has_visible_field set to False, link to fieldset template.