6848 fixed the issue of clicking collapse all expanding tree

AUTHORS

@@ -113,6 +113,7 @@ Eiswindyeti
 Ellen Reitmayr
 Erdem Derebasoglu
 Erdem Derebaşoğlu
+Eric Lau
 Erik Putrycz
 Ervin Kolenovic
 Escoul

CHANGELOG.md

@@ -48,6 +48,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We fixed an issue where it was impossible to connect to OpenOffice/LibreOffice on Mac OSX. [#6970](https://github.com/JabRef/jabref/pull/6970)
 - We fixed an issue with the python script used by browser plugins that failed to locate JabRef if not installed in its default location. [#6963](https://github.com/JabRef/jabref/pull/6963/files)
 - We fixed an issue where identity column header had incorrect foreground color in the  Dark theme. [#6796](https://github.com/JabRef/jabref/issues/6796)
+- We fixed an issue where clicking on Collapse All button in the Search for Unlinked Local Files expanded the directory structure erroneously [#6848](https://github.com/JabRef/jabref/issues/6848)
 
 ### Removed
 

src/main/java/org/jabref/gui/externalfiles/FindUnlinkedFilesDialog.java

@@ -165,7 +165,7 @@ private void initialize() {
         buttonOptionCollapseAll.setOnAction(event -> {
             CheckBoxTreeItem<FileNodeWrapper> root = (CheckBoxTreeItem<FileNodeWrapper>) tree.getRoot();
             expandTree(root, false);
-            root.setExpanded(true);
+            root.setExpanded(false);
         });
 
         textfieldDirectoryPath = new TextField();