diff --git a/src/bar.cpp b/src/bar.cpp
index 771adab..7bd6172 100644
--- a/src/bar.cpp
+++ b/src/bar.cpp
@@ -460,6 +460,16 @@ waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
 
   setupWidgets();
   window.show_all();
+
+  if (spdlog::should_log(spdlog::level::debug)) {
+    // Unfortunately, this function isn't in the C++ bindings, so we have to call the C version.
+    char* gtk_tree = gtk_style_context_to_string(
+        window.get_style_context()->gobj(),
+        (GtkStyleContextPrintFlags)(GTK_STYLE_CONTEXT_PRINT_RECURSE |
+                                    GTK_STYLE_CONTEXT_PRINT_SHOW_STYLE));
+    spdlog::debug("GTK widget tree:\n{}", gtk_tree);
+    g_free(gtk_tree);
+  }
 }
 
 void waybar::Bar::onMap(GdkEventAny*) {