diff -ur qtbase-everywhere-src-6.7.1-orig/src/gui/itemmodels/qfilesystemmodel.cpp qtbase-everywhere-src-6.7.1-changed/src/gui/itemmodels/qfilesystemmodel.cpp
--- qtbase-everywhere-src-6.7.1-orig/src/gui/itemmodels/qfilesystemmodel.cpp	2024-05-08 12:42:08.000000000 +0300
+++ qtbase-everywhere-src-6.7.1-changed/src/gui/itemmodels/qfilesystemmodel.cpp	2024-06-09 18:19:46.314994400 +0300
@@ -1024,9 +1024,18 @@
         switch (sortColumn) {
         case QFileSystemModelPrivate::NameColumn: {
 #ifndef Q_OS_MAC
-            // place directories before files
-            bool left = l->isDir();
-            bool right = r->isDir();
+            // . and .. go first
+            bool left = l->fileName == "."_L1;
+            bool right = r->fileName == "."_L1;
+            if (left ^ right)
+                return left;
+            left = l->fileName == ".."_L1;
+            right = r->fileName == ".."_L1;
+            if (left ^ right)
+                return left;
+            // Direcrories go second
+            left = l->isDir();
+            right = r->isDir();
             if (left ^ right)
                 return left;
 #endif
@@ -1034,9 +1043,18 @@
                 }
         case QFileSystemModelPrivate::SizeColumn:
         {
-            // Directories go first
-            bool left = l->isDir();
-            bool right = r->isDir();
+            // . and .. go first
+            bool left = l->fileName == "."_L1;
+            bool right = r->fileName == "."_L1;
+            if (left ^ right)
+                return left;
+            left = l->fileName == ".."_L1;
+            right = r->fileName == ".."_L1;
+            if (left ^ right)
+                return left;
+            // Direcrories go second
+            left = l->isDir();
+            right = r->isDir();
             if (left ^ right)
                 return left;