diff --git a/indra/newview/llsidetray.cpp b/indra/newview/llsidetray.cpp
index 3f0c1fa946ece4b4c87d048994c79e23e946534d..9893370dcf586fb15379bd6ed6ccbc3db3c22d57 100644
--- a/indra/newview/llsidetray.cpp
+++ b/indra/newview/llsidetray.cpp
@@ -250,6 +250,13 @@ void LLSideTrayTab::toggleTabDocked()
 		{
 			side_tray->collapseSideBar();
 		}
+
+		if (side_tray->getActiveTab() != this)
+		{
+			// When a tab other then current active tab is detached from Side Tray
+			// onOpen() should be called as tab visibility is changed.
+			onOpen(LLSD());
+		}
 	}
 	else
 	{