From 318b622cca183695b0f1ae546d20dc28c1563b79 Mon Sep 17 00:00:00 2001
From: Joachim Schmitz <jojo@schmitz-digital.de>
Date: Fri, 22 Nov 2024 11:38:56 +0100
Subject: [PATCH] Fix GH#25429: Disable the display of the key signature when
 changing transposing instruments if score is in concert pitch

Backport of #25601
---
 libmscore/keysig.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libmscore/keysig.cpp b/libmscore/keysig.cpp
index 091a0182648c4..7d402870b9e18 100644
--- a/libmscore/keysig.cpp
+++ b/libmscore/keysig.cpp
@@ -89,6 +89,10 @@ void KeySig::addLayout(SymId sym, qreal x, int line)
 
 void KeySig::layout()
       {
+      // We do not show keys if the key is for instrument change and we are in concert pitch mode
+      if (forInstrumentChange() && concertPitch())
+            return;
+
       qreal _spatium = spatium();
       setbbox(QRectF());
 
@@ -100,7 +104,6 @@ void KeySig::layout()
                   }
             return;
             }
-
       _sig.keySymbols().clear();
       if (staff() && !staff()->staffType(tick())->genKeysig())
             return;