diff --git a/src/calibre/gui2/dialogs/tag_categories.py b/src/calibre/gui2/dialogs/tag_categories.py
index cb1d06be02..30fb8c1e43 100644
--- a/src/calibre/gui2/dialogs/tag_categories.py
+++ b/src/calibre/gui2/dialogs/tag_categories.py
@@ -4,7 +4,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from qt.core import (
-    Qt, QDialog, QIcon, QListWidgetItem)
+    Qt, QApplication, QDialog, QIcon, QListWidgetItem)
 
 from calibre.gui2.dialogs.tag_categories_ui import Ui_TagCategories
 from calibre.gui2.dialogs.confirm_delete import confirm
@@ -103,6 +103,7 @@ class TagCategories(QDialog, Ui_TagCategories):
             self.category_filter_box.addItem(v)
         self.current_cat_name = None
 
+        self.copy_category_name_to_clipboard.clicked.connect(self.copy_category_name_to_clipboard_clicked)
         self.apply_button.clicked.connect(self.apply_button_clicked)
         self.unapply_button.clicked.connect(self.unapply_button_clicked)
         self.add_category_button.clicked.connect(self.add_category)
@@ -128,6 +129,10 @@ class TagCategories(QDialog, Ui_TagCategories):
             self.category_box.setCurrentIndex(0)
             self.select_category(0)
 
+    def copy_category_name_to_clipboard_clicked(self):
+        t = self.category_box.itemText(self.category_box.currentIndex())
+        QApplication.clipboard().setText(t)
+
     def initialize_category_lists(self, book_ids):
         self.db_categories = self.db.new_api.get_categories(book_ids=book_ids)
         self.all_items = []
diff --git a/src/calibre/gui2/dialogs/tag_categories.ui b/src/calibre/gui2/dialogs/tag_categories.ui
index d878c94e0c..a6a88500a4 100644
--- a/src/calibre/gui2/dialogs/tag_categories.ui
+++ b/src/calibre/gui2/dialogs/tag_categories.ui
@@ -21,7 +21,7 @@
    <item>
     <layout class="QGridLayout" name="gridLayout_4">
      <item row="0" column="0">
-      <layout class="QFormLayout" name="formLayout">
+      <layout class="QGridLayout" name="formLayout">
        <item row="0" column="0">
         <widget class="QLabel" name="label_3">
          <property name="text">
@@ -38,7 +38,7 @@
        <item row="0" column="1">
         <widget class="QComboBox" name="category_box">
          <property name="toolTip">
-          <string>Select a category to edit</string>
+          <string>Copy category name to clipboard</string>
          </property>
          <property name="editable">
           <bool>false</bool>
@@ -51,6 +51,17 @@
          </property>
         </widget>
        </item>
+       <item row="0" column="2">
+        <widget class="QToolButton" name="copy_category_name_to_clipboard">
+         <property name="toolTip">
+          <string>Copy the category name to the clipboard</string>
+         </property>
+         <property name="icon">
+          <iconset resource="../../../../resources/images.qrc">
+           <normaloff>:/images/edit-copy.png</normaloff>:/images/edit-copy.png</iconset>
+         </property>
+        </widget>
+       </item>
        <item row="1" column="0">
         <widget class="QLabel" name="label_5">
          <property name="text">
diff --git a/src/calibre/gui2/tag_browser/view.py b/src/calibre/gui2/tag_browser/view.py
index 715adae45f..397eb07611 100644
--- a/src/calibre/gui2/tag_browser/view.py
+++ b/src/calibre/gui2/tag_browser/view.py
@@ -180,6 +180,7 @@ class TagsView(QTreeView):  # {{{
 
     def __init__(self, parent=None):
         QTreeView.__init__(self, parent=None)
+        self.possible_drag_start = None
         self.setProperty('frame_for_focus', True)
         self.setMouseTracking(True)
         self.alter_tb = None
@@ -384,7 +385,12 @@ class TagsView(QTreeView):  # {{{
 
     def mousePressEvent(self, event):
         if event.buttons() & Qt.MouseButton.LeftButton:
-            self.possible_drag_start = event.pos()
+            # Only remember a possible drag start if the item is drag enabled
+            dex = self.indexAt(event.pos())
+            if self._model.flags(dex) & Qt.ItemFlag.ItemIsDragEnabled:
+                self.possible_drag_start = event.pos()
+            else:
+                self.possible_drag_start = None
         return QTreeView.mousePressEvent(self, event)
 
     def mouseMoveEvent(self, event):
@@ -399,7 +405,8 @@ class TagsView(QTreeView):  # {{{
             QTreeView.mouseMoveEvent(self, event)
             return
         # don't start drag/drop until the mouse has moved a bit.
-        if ((event.pos() - self.possible_drag_start).manhattanLength() <
+        if (self.possible_drag_start is None or
+            (event.pos() - self.possible_drag_start).manhattanLength() <
                                     QApplication.startDragDistance()):
             QTreeView.mouseMoveEvent(self, event)
             return