diff --git a/Touch-screens.md b/Touch-screens.md
index 6a86559..f278c3b 100644
--- a/Touch-screens.md
+++ b/Touch-screens.md
@@ -79,6 +79,8 @@ If you have new data point, please file a doc bug.
 * Mid 2017 Manufacturing Date: 140Hz
 * February 2018 Manufacturing Date: 180Hz
 
+Note: early S2240T models (2014-2015) seem to have a hardware bug where recent touches get "replayed" if there are many rapid touches in a row, which can be a major issue for Jubeat.
+
 ### Dell S2340T (S2340Tt)
 
 * Oct 2012 Manufacturing Date: 180Hz