diff --git a/atlas/forms.py b/atlas/forms.py
index 89361c03..697133a4 100755
--- a/atlas/forms.py
+++ b/atlas/forms.py
@@ -246,8 +246,13 @@ class NormalCaseForm(ModelForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.helper = FormHelper()
+        # Do not render a <form> tag from crispy here because the template
+        # already provides the surrounding form element (we inject this
+        # fragment into a modal that contains the form). Rendering a second
+        # <form> would nest forms and cause fields to be outside the
+        # submitted form (HTMX would only send the outer form's fields).
         self.helper.form_method = "post"
-        self.helper.form_tag = True
+        self.helper.form_tag = False
         self.helper.layout = Layout(
             Div(
                 Field("age_years", wrapper_class="col-md-4"),
diff --git a/atlas/views.py b/atlas/views.py
index a2174953..8dfb084e 100755
--- a/atlas/views.py
+++ b/atlas/views.py
@@ -631,7 +631,16 @@ def case_normal_form(request, pk):
         "modality": inferred_modality,
     })
 
+    # Log the rendered form HTML so we can verify inputs/names reach the client
+    from loguru import logger
+    try:
+        form_html = form.as_p()
+        logger.debug("case_normal_form rendered form HTML: {}", form_html)
+    except Exception as e:
+        logger.exception("Failed to render form.as_p(): {}", e)
+
     html = render_to_string("atlas/partials/_normal_form.html", {"form": form, "case": case}, request=request)
+    logger.debug("case_normal_form returning HTML length: {}", len(html))
     return HttpResponse(html)
 
 
@@ -648,8 +657,12 @@ def create_case_normal(request, pk):
         return HttpResponse(status=403)
 
     from .forms import NormalCaseForm
+    from loguru import logger
+
     form = NormalCaseForm(request.POST)
+    logger.debug("create_case_normal POST data: {}", dict(request.POST))
     if form.is_valid():
+        logger.debug("NormalCaseForm.cleaned_data: {}", form.cleaned_data)
         nc = form.save(commit=False)
         nc.case = case
         nc.added_by = request.user