@@ -30,6 +30,7 @@
     hunter = None
 
 import sys
+import enum
 import faulthandler
 import traceback
 import signal
@@ -261,6 +262,13 @@ def configure_pyqt():
         # FIXME:qt6 solve this in qutebrowser/qt/sip.py equivalent
         pass
 
+    # WORKAROUND for
+    # https://www.riverbankcomputing.com/pipermail/pyqt/2022-May/044668.html
+    if hasattr(enum, "FlagBoundary"):  # Python 3.11
+        from qutebrowser.qt.core import QUrl
+        # pylint: disable-next=protected-access
+        QUrl.UrlFormattingOption._boundary_ = enum.FlagBoundary.KEEP
+
 
 def init_log(args):
     """Initialize logging.
 
@@ -91,6 +91,7 @@ def whitelist_generator():  # noqa: C901
     yield 'PaintContext.clip'  # from completiondelegate.py
     yield 'logging.LogRecord.log_color'  # from logging.py
     yield 'scripts.utils.use_color'  # from asciidoc2html.py
+    yield 'QUrl.UrlFormattingOption._boundary_'
     for attr in ['pyeval_output', 'log_clipboard', 'fake_clipboard']:
         yield 'qutebrowser.misc.utilcmds.' + attr