diff --git a/Known-issues.md b/Known-issues.md
index 84dade3..b611d86 100644
--- a/Known-issues.md
+++ b/Known-issues.md
@@ -48,6 +48,7 @@
  * If your touch screen is misbehaving in certain games, it's likely due to hardware incompatibility.
     * For most touch-based games, spice uses Windows Raw Input API, which provides the lowest latency and the best performance; however, some lower-end touch screens have issues with Raw Input. In this case, try `Touch Compatibility Mode (Disable Raw Input Touch) (-wintouch)` option which tells spice to fall back to Windows 8 Pointer API / Windows 7 Touch API, which provides better compatibility but results in higher latency and worse performance.
     * Note that each game handles touch differently and this is not a trivial topic; you'll need to experiment with various options and Windows settings.
+ * `Show Insert Card button` feature was implemented long ago and never updated. It only works in very specific situations: the game must be jubeat, and you must disable raw input touch.
 
 ## Network