Fix oversized splitter bar hover area for Adwaita and any other theme that does this

terminatorlib/terminator.py

@@ -373,8 +373,16 @@ class Terminator(Borg):
                 Gdk.Screen.get_default(),
                 self.style_provider)
             self.style_provider = None
-        if self.config['handle_size'] in xrange(0, 21):
+
         css = """
+            GtkPaned {
+                margin: 0 0 0 0;
+                padding: 0 0 0 0;
+                }
+            """
+
+        if self.config['handle_size'] in xrange(0, 21):
+            css += """
                 GtkPaned {
                     -GtkPaned-handle-size: %s
                 }