foo.html:

{{ include "bar.html" with x="x1.html" y="y1"}}
{{ include "bar.html" with x="x2.html" y="y2"}}
{{ include "bar.html" y="y3"}}

bar.html:

### THIS IS WORKING
{% if x %}
   y
   x
   {{include x}}
{% else %}
   pass
{% endif %}

### THIS IS NOT WORKING
<div class="modal" ......>
  ...
   {% if x %}
     y
     x
     {{include x}}
  {% else %}
     pass
  {% endif %}
  ...
</div>

Expected behavior

y1 x1 render x1.html

y2 x2 render x2.html

y3pass

Actual behavior

y1 x1 render x1.html

y2 x1 render x1.html <--- why this render x1 and not x2

y3 x1 render x1.html <--- still printing x and rendering x1.html

Resources (screenshots, code snippets etc.) stackover flow : https://stackoverflow.com/questions/60182272/django-include-from-with-var-unexpected-result