diff --git a/src/calibre/gui2/library/models.py b/src/calibre/gui2/library/models.py
index 7c7204509f..7b54f7c7b6 100644
--- a/src/calibre/gui2/library/models.py
+++ b/src/calibre/gui2/library/models.py
@@ -1067,7 +1067,7 @@ class BooksModel(QAbstractTableModel):  # {{{
             cname = self.column_map[index.column()]
             ans = Qt.AlignmentFlag.AlignVCenter | ALIGNMENT_MAP[self.alignment_map.get(cname,
                 'left')]
-            return int(ans)
+            return int(ans)  # https://bugreports.qt.io/browse/PYSIDE-1974
         elif role == Qt.ItemDataRole.FontRole and self.styled_columns:
             cname = self.column_map[index.column()]
             return self.styled_columns.get(cname)
@@ -1787,7 +1787,7 @@ class DeviceBooksModel(BooksModel):  # {{{
             cname = self.column_map[index.column()]
             ans = Qt.AlignmentFlag.AlignVCenter | ALIGNMENT_MAP[self.alignment_map.get(cname,
                 'left')]
-            return int(ans)
+            return int(ans)  # https://bugreports.qt.io/browse/PYSIDE-1974
         return None
 
     def headerData(self, section, orientation, role):
diff --git a/src/calibre/gui2/store/config/chooser/models.py b/src/calibre/gui2/store/config/chooser/models.py
index e2f499c828..8cf971d327 100644
--- a/src/calibre/gui2/store/config/chooser/models.py
+++ b/src/calibre/gui2/store/config/chooser/models.py
@@ -142,7 +142,7 @@ class Matches(QAbstractItemModel):
                 return Qt.CheckState.Checked
         elif role == Qt.ItemDataRole.TextAlignmentRole:
             if col in self.CENTERED_COLUMNS:
-                return int(Qt.AlignmentFlag.AlignHCenter)
+                return int(Qt.AlignmentFlag.AlignHCenter)  # https://bugreports.qt.io/browse/PYSIDE-1974
             return Qt.AlignmentFlag.AlignLeft
         elif role == Qt.ItemDataRole.ToolTipRole:
             if col == 0:
diff --git a/src/calibre/gui2/tweak_book/manage_fonts.py b/src/calibre/gui2/tweak_book/manage_fonts.py
index 79b1f4ba97..a6ee741f84 100644
--- a/src/calibre/gui2/tweak_book/manage_fonts.py
+++ b/src/calibre/gui2/tweak_book/manage_fonts.py
@@ -136,7 +136,7 @@ class AllFonts(QAbstractTableModel):
         if role == Qt.ItemDataRole.TextAlignmentRole:
             col = index.column()
             if col == 0:
-                return int(Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignVCenter)
+                return int(Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignVCenter)  # https://bugreports.qt.io/browse/PYSIDE-1974
         if role in (Qt.ItemDataRole.UserRole, Qt.ItemDataRole.UserRole + 1):
             row = index.row()
             try:
diff --git a/src/calibre/gui2/tweak_book/reports.py b/src/calibre/gui2/tweak_book/reports.py
index b99674b042..1f85149fab 100644
--- a/src/calibre/gui2/tweak_book/reports.py
+++ b/src/calibre/gui2/tweak_book/reports.py
@@ -115,7 +115,7 @@ class FileCollection(QAbstractTableModel):
                     return self.COLUMN_HEADERS[section]
             elif role == Qt.ItemDataRole.TextAlignmentRole:
                 with suppress(IndexError):
-                    return int(self.alignments[section])
+                    return int(self.alignments[section])  # https://bugreports.qt.io/browse/PYSIDE-1974
         return QAbstractTableModel.headerData(self, section, orientation, role)
 
     def location(self, index):
@@ -280,7 +280,7 @@ class FilesModel(FileCollection):
             if col == 3:
                 return self.CATEGORY_NAMES.get(entry.category)
         elif role == Qt.ItemDataRole.TextAlignmentRole:
-            return int(Qt.AlignVCenter | self.alignments[index.column()])
+            return int(Qt.AlignVCenter | self.alignments[index.column()])  # https://bugreports.qt.io/browse/PYSIDE-1974
 
 
 class FilesWidget(QWidget):
@@ -468,9 +468,9 @@ class ImagesModel(FileCollection):
                 return self.files[index.row()]
             except IndexError:
                 pass
-        elif role == Qt.TextAlignmentRole:
+        elif role == Qt.ItemDataRole.TextAlignmentRole:
             with suppress(IndexError):
-                return int(self.alignments[index.column()])
+                return int(self.alignments[index.column()])  # https://bugreports.qt.io/browse/PYSIDE-1974
 
 
 class ImagesWidget(QWidget):
@@ -737,9 +737,9 @@ class WordsModel(FileCollection):
                 return self.files[index.row()]
             except IndexError:
                 pass
-        elif role == Qt.TextAlignmentRole:
+        elif role == Qt.ItemDataRole.TextAlignmentRole:
             with suppress(IndexError):
-                return int(self.alignments[index.column()])
+                return int(self.alignments[index.column()])  # https://bugreports.qt.io/browse/PYSIDE-1974
 
     def location(self, index):
         return None
@@ -829,9 +829,9 @@ class CharsModel(FileCollection):
                 return self.files[index.row()]
             except IndexError:
                 pass
-        elif role == Qt.TextAlignmentRole:
+        elif role == Qt.ItemDataRole.TextAlignmentRole:
             with suppress(IndexError):
-                return int(self.alignments[index.column()])
+                return int(self.alignments[index.column()])  # https://bugreports.qt.io/browse/PYSIDE-1974
 
     def location(self, index):
         return None
diff --git a/src/calibre/gui2/tweak_book/spell.py b/src/calibre/gui2/tweak_book/spell.py
index 8983fde60f..93db952e67 100644
--- a/src/calibre/gui2/tweak_book/spell.py
+++ b/src/calibre/gui2/tweak_book/spell.py
@@ -646,7 +646,7 @@ class WordsModel(QAbstractTableModel):
             elif role == Qt.ItemDataRole.InitialSortOrderRole:
                 return Qt.SortOrder.DescendingOrder if section == 1 else Qt.SortOrder.AscendingOrder
             elif role == Qt.ItemDataRole.TextAlignmentRole:
-                return int(Qt.AlignmentFlag.AlignVCenter | self.alignments[section])
+                return int(Qt.AlignmentFlag.AlignVCenter | self.alignments[section])  # https://bugreports.qt.io/browse/PYSIDE-1974
 
     def misspelled_text(self, w):
         if self.spell_map[w]:
@@ -673,7 +673,7 @@ class WordsModel(QAbstractTableModel):
             if col == 3:
                 return self.misspelled_text((word, locale))
         if role == Qt.ItemDataRole.TextAlignmentRole:
-            return int(Qt.AlignmentFlag.AlignVCenter | self.alignments[index.column()])
+            return int(Qt.AlignmentFlag.AlignVCenter | self.alignments[index.column()])  # https://bugreports.qt.io/browse/PYSIDE-1974
 
     def sort(self, column, order=Qt.SortOrder.AscendingOrder):
         reverse = order != Qt.SortOrder.AscendingOrder