From 27c0d1973f92243b2f2bbd14b8f5ffec0d232b9c Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Sun, 7 Apr 2019 13:57:41 +0200
Subject: [PATCH] Do not attempt to show module info for category headers

---
 src/frontends/qt4/GuiDocument.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/frontends/qt4/GuiDocument.cpp b/src/frontends/qt4/GuiDocument.cpp
index cf8d999358..26ffc95744 100644
--- a/src/frontends/qt4/GuiDocument.cpp
+++ b/src/frontends/qt4/GuiDocument.cpp
@@ -2972,6 +2972,14 @@ void GuiDocument::updateModuleInfo()
 		return;
 	}
 	QModelIndex const & idx = lv->selectionModel()->currentIndex();
+
+	if (!focus_on_selected
+	    && modules_av_model_.itemFromIndex(idx)->hasChildren()) {
+		// This is a category header
+		modulesModule->infoML->document()->clear();
+		return;
+	}
+
 	string const modName = focus_on_selected ?
 				modules_sel_model_.getIDString(idx.row())
 			      : fromqstr(modules_av_model_.data(idx, Qt::UserRole).toString());
-- 
2.39.5