From af292bc73eb4e8298b3d4af7009428298dcf2c81 Mon Sep 17 00:00:00 2001
From: Siedlerchr <siedlerkiller@gmail.com>
Date: Mon, 7 Dec 2020 19:47:42 +0100
Subject: [PATCH] fix setting of tab title in wrong thread

not on fx thread
---
 src/main/java/org/jabref/gui/LibraryTab.java | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/main/java/org/jabref/gui/LibraryTab.java b/src/main/java/org/jabref/gui/LibraryTab.java
index b8f1f8aabf5..5d50d770f9a 100644
--- a/src/main/java/org/jabref/gui/LibraryTab.java
+++ b/src/main/java/org/jabref/gui/LibraryTab.java
@@ -313,13 +313,16 @@ public void updateTabTitle(boolean isChanged) {
                 addSharedDbInformation(toolTipText, bibDatabaseContext);
             }
             addModeInfo(toolTipText, bibDatabaseContext);
-            if (databaseLocation == DatabaseLocation.LOCAL && bibDatabaseContext.getDatabase().hasEntries()) {
+            if ((databaseLocation == DatabaseLocation.LOCAL) && bibDatabaseContext.getDatabase().hasEntries()) {
                 addChangedInformation(toolTipText, Localization.lang("untitled"));
             }
         }
 
-        textProperty().setValue(tabTitle.toString());
-        setTooltip(new Tooltip(toolTipText.toString()));
+        DefaultTaskExecutor.runInJavaFXThread(() -> {
+            textProperty().setValue(tabTitle.toString());
+            setTooltip(new Tooltip(toolTipText.toString()));
+        });
+
     }
 
     private static void addChangedInformation(StringBuilder text, String fileName) {