diff --git a/platform/platform-api/src/com/intellij/ui/components/ScrollBarAnimationBehavior.kt b/platform/platform-api/src/com/intellij/ui/components/ScrollBarAnimationBehavior.kt
index 9dc69e9218a1..aa74f64d7161 100644
--- a/platform/platform-api/src/com/intellij/ui/components/ScrollBarAnimationBehavior.kt
+++ b/platform/platform-api/src/com/intellij/ui/components/ScrollBarAnimationBehavior.kt
@@ -111,7 +111,7 @@ internal open class ToggleableScrollBarAnimationBehaviorDecorator(private val de
     if (isOn == null) decoratedBehavior.onThumbHover(hovered)
   }
   override fun onThumbMove() {
-    if (isOn == null) decoratedBehavior.onThumbMove()
+    decoratedBehavior.onThumbMove()
   }
 
   override fun onUninstall() {