Gaphor version:         2.26.0
Operating System:       Windows (10)
Display:                GdkWin32Display
Python version:         3.12.4
GTK version:            4.14.4
Adwaita version:        1.5.2
GtkSourceView version:  5.12.1
Cairo version:          1.18.0
Pango version:          1.54.0
PyGObject version:      3.48.2
Pycairo version:        1.26.1


Errors:

Time since application startup: 0:23:27
|Traceback (most recent call last):
|  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\gaphor\UML\classes\associationpropertypages.py", line 148, in _on_end_navigability_change
|    with Transaction(self.event_manager):
|  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\gaphor\transaction.py", line 58, in __init__
|    self._handle(TransactionBegin(self.context))
|    |            |                -> <gaphor.transaction.Transaction object at 0x000002A8D3750B00>
|    |            -> <class 'gaphor.event.TransactionBegin'>
|    -> <gaphor.transaction.Transaction object at 0x000002A8D3750B00>
|  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\gaphor\transaction.py", line 113, in _handle
|    self.event_manager.handle(event)
|    |                         -> <gaphor.event.TransactionBegin object at 0x000002A8D3750B30>
|    -> <gaphor.transaction.Transaction object at 0x000002A8D3750B00>
|  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\gaphor\core\eventmanager.py", line 77, in handle
|    self._priority.handle(event)
|    |                     -> <gaphor.event.TransactionBegin object at 0x000002A8D3750B30>
|    -> <gaphor.core.eventmanager.EventManager object at 0x000002A8C9680380>
|  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\generic\event.py", line 63, in handle
|    raise ExceptionGroup("Error while handling events", exceptions)
|                                                        -> [AssertionError()]
|ExceptionGroup: Error while handling events (1 sub-exception)
└─┬──────────────────────────────╌┄┈
  |Traceback (most recent call last):
  |  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\generic\event.py", line 59, in handle
  |    handler(event)
  |    |       -> <gaphor.event.TransactionBegin object at 0x000002A8D3750B30>
  |    -> <bound method UndoManager.begin_transaction of <gaphor.services.undomanager.UndoManager object at 0x000002A8C9610F80>>
  |  File "c:\Users\pbrow\Workspaces\GaphorMDImportPlugin\.venv\Lib\site-packages\gaphor\services\undomanager.py", line 179, in begin_transaction
  |    assert not self._current_transaction
  |               -> <gaphor.services.undomanager.UndoManager object at 0x000002A8C9610F80>
  |AssertionError: assert not self._current_transaction
  └─────────────────────────────╌┄┈