=== modified file 'terminatorlib/terminal.py'
--- terminatorlib/terminal.py	2019-08-18 15:52:08 +0000
+++ terminatorlib/terminal.py	2019-10-21 21:44:13 +0000
@@ -905,8 +905,8 @@
         # Any button event should grab focus
         widget.grab_focus()
 
-        if type(widget) == Gtk.VScrollbar and event.type == Gdk.EventType._2BUTTON_PRESS:
-            # Suppress double-click behavior
+        if event.type == Gdk.EventType._2BUTTON_PRESS or event.type == Gdk.EventType._3BUTTON_PRESS:
+            # Suppress additional pasting on double-click and triple-click
             return True
 
         use_primary = (display_manager() != 'WAYLAND')