From 83c3e273106008f49e7d0c471c4f69f62ccd0886 Mon Sep 17 00:00:00 2001
From: Rolf Kristensen <sweaty1@hotmail.com>
Date: Sun, 4 Dec 2022 15:38:07 +0100
Subject: [PATCH] LogEventInfo with custom MessageFormatter should assign
 FormattedMessage

---
 src/NLog/LogEventInfo.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/NLog/LogEventInfo.cs b/src/NLog/LogEventInfo.cs
index 0095577e41..d12f6a6d24 100644
--- a/src/NLog/LogEventInfo.cs
+++ b/src/NLog/LogEventInfo.cs
@@ -655,13 +655,13 @@ internal void SetMessageFormatter([NotNull] LogMessageFormatter messageFormatter
                 _messageFormatter = messageFormatter;
             }
 
-            if (NeedToPreformatMessage(_parameters))
+            if (hasCustomMessageFormatter || NeedToPreformatMessage(_parameters))
             {
                 CalcFormattedMessage();
             }
             else
             {
-                if (!hasCustomMessageFormatter && singleTargetMessageFormatter != null && _parameters?.Length > 0 && _message?.Length < 256)
+                if (singleTargetMessageFormatter != null && _parameters?.Length > 0 && _message?.Length < 256)
                 {
                     // Change MessageFormatter so it writes directly to StringBuilder without string-allocation
                     _messageFormatter = singleTargetMessageFormatter;