The dialog's vbox internal child is now called content_area
<property name="resizable">False</property>
<property name="modal">True</property>
<property name="use_header_bar">1</property>
- <child internal-child="vbox">
+ <child internal-child="content_area">
<object class="GtkBox" id="dialog-vbox2">
<property name="can_focus">False</property>
<property name="orientation">vertical</property>
<property name="resizable">False</property>
<property name="modal">True</property>
<property name="use_header_bar">1</property>
- <child internal-child="vbox">
+ <child internal-child="content_area">
<object class="GtkBox" id="dialog-vbox2">
<property name="can_focus">False</property>
<property name="orientation">vertical</property>