2 files changed, 8 insertions, 1 deletions
diff --git a/indra/llui/lltabcontainer.cpp b/indra/llui/lltabcontainer.cpp
index f15e9771c0..76b9e448a1 100644
--- a/indra/llui/lltabcontainer.cpp
+++ b/indra/llui/lltabcontainer.cpp
@@ -605,6 +605,7 @@ BOOL LLTabContainer::handleMouseDown( S32 x, S32 y, MASK mask )
 			LLButton* tab_button = getTab(index)->mButton;
 			gFocusMgr.setMouseCapture(this);
 			tab_button->setFocus(TRUE);
+            mMouseDownTimer.start();
 		}
 	}
 	if (handled) {
@@ -653,7 +654,11 @@ BOOL LLTabContainer::handleHover( S32 x, S32 y, MASK mask )
 		handled = LLPanel::handleHover(x, y, mask);
 	}
 
-	commitHoveredButton(x, y);
+    F32 drag_delay = 0.25f; // filter out clicks from dragging
+    if (mMouseDownTimer.getElapsedTimeF32() > drag_delay)
+    {
+        commitHoveredButton(x, y);
+    }
 	return handled;
 }
 
@@ -699,6 +704,7 @@ BOOL LLTabContainer::handleMouseUp( S32 x, S32 y, MASK mask )
 	}
 
 	commitHoveredButton(x, y);
+    mMouseDownTimer.stop();
 	LLPanel* cur_panel = getCurrentPanel();
 	if (hasMouseCapture())
 	{
diff --git a/indra/llui/lltabcontainer.h b/indra/llui/lltabcontainer.h
index 8f8cedb1b9..aa4a08c4ff 100644
--- a/indra/llui/lltabcontainer.h
+++ b/indra/llui/lltabcontainer.h
@@ -320,6 +320,7 @@ private:
 	LLUIColor						mTabsFlashingColor;
 	S32								mTabIconCtrlPad;
 	bool							mUseTabEllipses;
+    LLFrameTimer					mMouseDownTimer;
 };
 
 #endif  // LL_TABCONTAINER_H