Bug 2219792

Description of problem:
Tried to close the app with several tabs, and gedit notified me that there are the unsaved changes in the file, even though there was no star indicating changes, and as far as I know the file was not changed. When I tried to save it anyway, gedit crashed.

Version-Release number of selected component:
gedit-2:44.2-1.fc38

Additional info:
reporter:       libreport-2.17.11
cmdline:        /usr/bin/gedit --gapplication-service
type:           CCpp
runlevel:       N 5
reason:         gedit killed by SIGSEGV
crash_function: g_type_check_instance_is_fundamentally_a
uid:            1000
comment:        Tried to close the app with several tabs, and gedit notified me that there are the unsaved changes in the file, even though there was no star indicating changes, and as far as I know the file was not changed. When I tried to save it anyway, gedit crashed.
backtrace_rating: 4
rootdir:        /
package:        gedit-2:44.2-1.fc38
executable:     /usr/bin/gedit
kernel:         6.3.8-200.fc38.x86_64
journald_cursor: s=2cae4babb11544789d09cba8f246cb0f;i=1861a6;b=9b84fddf43de4fcc8564f48146bbb4d3;m=f9881bee;t=5ffbba3ba1222;x=d77084aa4eb2d98b
cgroup:         0::/user.slice/user-1000.slice/user/app.slice/dbus-:1.2-org.gnome.gedit

Truncated backtrace:
Thread no. 1 (44 frames)
 #0 g_type_check_instance_is_fundamentally_a at ../gobject/gtype.c:4166
 #1 g_object_notify_by_pspec at ../gobject/gobject.c:1655
 #2 document_modified_changed at ../gedit/gedit-tab.c:597
 #4 signal_emit_unlocked_R.isra.0 at ../gobject/gsignal.c:3812
 #7 gtk_text_buffer_set_modified at ../gtk/gtktextbuffer.c:3123
 #8 gtk_text_buffer_real_changed at ../gtk/gtktextbuffer.c:2561
 #9 tepl_buffer_changed at ../tepl/tepl-buffer.c:253
 #10 _g_closure_invoke_va at ../gobject/gclosure.c:895
 #13 gtk_text_buffer_real_delete_range at ../gtk/gtktextbuffer.c:1641
 #14 gtk_source_buffer_real_delete_range at ../gtksourceview/gtksourcebuffer.c:1325
 #16 signal_emit_unlocked_R.isra.0 at ../gobject/gsignal.c:3851
 #19 ffi_call_unix64 at ../src/x86/unix64.S:104
 #20 ffi_call_int at ../src/x86/ffi64.c:673
 #21 ffi_call at ../src/x86/ffi64.c:710
 #22 pygi_invoke_c_callable at ../gi/pygi-invoke.c:684
 #23 pygi_function_cache_invoke at ../gi/pygi-cache.c:862
 #24 pygi_callable_info_invoke at ../gi/pygi-invoke.c:727
 #25 _wrap_g_callable_info_invoke at ../gi/pygi-invoke.c:764
 #26 _callable_info_call at ../gi/pygi-info.c:548
 #27 _PyObject_MakeTpCall at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Objects/call.c:214
 #28 _PyEval_EvalFrameDefault at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Python/ceval.c:4774
 #29 _PyEval_EvalFrame at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Include/internal/pycore_ceval.h:73
 #30 _PyEval_Vector at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Python/ceval.c:6439
 #31 _PyFunction_Vectorcall at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Objects/call.c:393
 #32 _PyObject_VectorcallTstate at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Include/internal/pycore_call.h:92
 #33 method_vectorcall at /usr/src/debug/python3.11-3.11.4-1.fc38.x86_64/Objects/classobject.c:89
 #34 pygi_signal_closure_marshal at ../gi/pygi-signal-closure.c:197
 #36 signal_emit_unlocked_R.isra.0 at ../gobject/gsignal.c:3812
 #39 launch_saver at ../gedit/gedit-tab.c:2399
 #41 signal_emit_unlocked_R.isra.0 at ../gobject/gsignal.c:3812
 #44 g_simple_action_activate at ../gio/gsimpleaction.c:227
 #46 gtk_application_accels_activate at ../gtk/gtkapplicationaccels.c:448
 #47 gtk_window_activate_key at ../gtk/gtkwindow.c:12117
 #48 gedit_window_key_press_event at ../gedit/gedit-window.c:425
 #49 _gtk_marshal_BOOLEAN__BOXEDv at gtk/gtkmarshalers.c:130
 #50 _g_closure_invoke_va at ../gobject/gclosure.c:895
 #53 gtk_widget_event_internal.part.0.lto_priv.0 at ../gtk/gtkwidget.c:7812
 #54 propagate_event at ../gtk/gtkmain.c:2681
 #55 gtk_propagate_event at ../gtk/gtkmain.c:2725
 #56 gtk_main_do_event at ../gtk/gtkmain.c:1921
 #58 _gdk_event_emit at ../gdk/gdkevents.c:73
 #63 g_main_context_iterate.isra.0 at ../glib/gmain.c:4276
 #64 g_main_context_iteration at ../glib/gmain.c:4343
 #65 g_application_run at ../gio/gapplication.c:2573