diff --git a/PROMS/Volian.Controls.Library/DisplayTabControl.cs b/PROMS/Volian.Controls.Library/DisplayTabControl.cs
index 82f08177..90ed2439 100644
--- a/PROMS/Volian.Controls.Library/DisplayTabControl.cs
+++ b/PROMS/Volian.Controls.Library/DisplayTabControl.cs
@@ -827,7 +827,11 @@ namespace Volian.Controls.Library
 		private DisplayTabItem FindRemainingTab(Bar myBar)
 		{
 			// C2023-004: Proms reverts to first tab rather than active tab/save last selected tab is and use to reset to it
-			if (LastSelectedDisplayTabItem != null && !_RemovedDisplayTabItems.Contains(LastSelectedDisplayTabItem))
+			// B2023-078 Added the check for LastSelectedDisplayTabItem is in myBar.  This fixes a crash issue where user has as split screen
+			//           each with procedure tabs and closes a procedure tab in the split screen that does not currently have focus.
+			//           that other screen has its own myBar list which does not contain the LastSelectedDisplayTabItem references.
+			//           In that case we want to run through the foreach loop to find a tab in the currently active split screen side
+			if (LastSelectedDisplayTabItem != null && myBar.Items.Contains(LastSelectedDisplayTabItem) && !_RemovedDisplayTabItems.Contains(LastSelectedDisplayTabItem))
 				return LastSelectedDisplayTabItem;
 			foreach (DisplayTabItem itm in myBar.Items)
 			{