From 902e862bf2493c1f12e90d2204281d2f8eebaf5b Mon Sep 17 00:00:00 2001
From: Dmitry Boyarintsev <skalogryz.lists@gmail.com>
Date: Fri, 3 Sep 2021 21:25:21 -0400
Subject: [PATCH] cocoa: evaluating the need of next and prev arrows on the
 change of the tab caption

(cherry picked from commit 90efbfef0fad539d0d83b9ef51c4f1f8750c408f)
---
 lcl/interfaces/cocoa/cocoawscomctrls.pas | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lcl/interfaces/cocoa/cocoawscomctrls.pas b/lcl/interfaces/cocoa/cocoawscomctrls.pas
index 700b594367..ba49d1e950 100644
--- a/lcl/interfaces/cocoa/cocoawscomctrls.pas
+++ b/lcl/interfaces/cocoa/cocoawscomctrls.pas
@@ -644,6 +644,12 @@ begin
   page := GetCocoaTabPageFromHandle(AWinControl.Handle);
   if not Assigned(page) then Exit;
   page.setLabel(ControlTitleToNSStr(AText));
+
+  if (AWinControl.Parent <> nil)
+    and (AWinControl.Parent is TCustomTabControl)
+    and (AWinControl.HandleAllocated)
+  then
+    UpdateTabAndArrowVisibility( TCocoaTabControl(AWinControl.Parent.Handle) );
 end;
 
 class function TCocoaWSCustomPage.GetText(const AWinControl: TWinControl;