Force to render empty container when floats break

Related to #2571.

Author: liZe

tests/draw/test_float.py

@@ -905,3 +905,55 @@ def test_float_split_clear_empty(assert_pixels):
         </style>
         <div>bb bb bb bb bb</div>
         <article></article>''')
+
+
+@assert_no_logs
+def test_float_split_large_parent(assert_pixels):
+    assert_pixels('''
+        BBBB
+        BBBB
+        BBBB
+        BBBB
+        GGGG
+
+        BBBB
+        BBBB
+        BBBB
+        BBBB
+        GGGG
+
+        BBBB
+        BBBB
+        GGGG
+        GGGG
+        GGGG
+
+        rrrr
+        rrrr
+        GGGG
+        GGGG
+        GGGG
+    ''', '''
+        <style>
+            @page {
+                size: 4px 5px;
+            }
+            body {
+                color: red;
+                font: 2px / 1 weasyprint;
+            }
+            section {
+                background: lime;
+                height: 100px;
+            }
+            div {
+                color: blue;
+                float: left;
+            }
+            article {
+                clear: left;
+            }
+        </style>
+        <section>
+        <div>bb bb bb bb bb</div>
+        <article>aa</article>''')

weasyprint/layout/page.py

@@ -667,7 +667,7 @@ def make_page(context, root_box, page_type, resume_at, page_number,
         parent.force_fragmentation = True
         root_box, _, _, _, _, _ = block_level_layout(
             context, initial_root_box, 0, initial_resume_at, initial_containing_block,
-            page_is_empty, positioned_boxes, positioned_boxes, adjoining_margins)
+            True, positioned_boxes, positioned_boxes, adjoining_margins)
         resume_at = initial_resume_at
     root_box.children = out_of_flow_boxes + root_box.children