From fe744f81129b88f006c024c39d43eb0f29892110 Mon Sep 17 00:00:00 2001
From: reuk <reuk@users.noreply.github.com>
Date: Mon, 14 Mar 2022 21:27:03 +0000
Subject: [PATCH] VST2 Client:  Flush command buffer after attaching plugin
 window on Linux

---
 modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp b/modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp
index d0842eb5c2..8fc46bfc0b 100644
--- a/modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp
+++ b/modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp
@@ -1071,6 +1071,10 @@ public:
                                                          (Window) getWindowHandle(),
                                                          (HostWindowType) hostWindow,
                                                          0, 0);
+             // The host is likely to attempt to move/resize the window directly after this call,
+             // and we need to ensure that the X server knows that our window has been attached
+             // before that happens.
+             X11Symbols::getInstance()->xFlush (display);
             #elif JUCE_WINDOWS && JUCE_WIN_PER_MONITOR_DPI_AWARE
              checkHostWindowScaleFactor();
              startTimer (500);