diff --git a/known bugs.txt b/known bugs.txt
index 73871961..dbe28a49 100644
--- a/known bugs.txt	
+++ b/known bugs.txt	
@@ -8,6 +8,7 @@ Known Bugs (Problems with the logic ):
 [W] make PTY better react to shortcuts when a lot of output apears (normal)
 [] Numlock/ Capslock is sometimes out of Sync (normal)
 [] nodm is not autodedetected by screen ignore
+After switching back from X sometimes  modifier keys are stuck. ( control or alt)
 
 Glitches (improve diff results):
 - currently None