0.12.10dfsg2-6 version crashes with segfault

[Ramses Rodriguez Martinez]

Version in jammy (0.12.10dfsg2-6) crashes with segfault following these steps:
1. open any epub file
2. pressing Fn key + Down

coredumpctl info says the following, i can provide the entire dump if required:

                #0 0x00007f2991ea007b n/a (libpango-1.0.so.0 + 0x3f07b)
                #1 0x00007f2991ea03ba n/a (libpango-1.0.so.0 + 0x3f3ba)
                #2 0x00007f2991ea0a19 pango_shape_with_flags (libpango-1.0.so.0 + 0x3fa19)
                #3 0x00007f2991ea0a2f pango_shape_full (libpango-1.0.so.0 + 0x3fa2f)
                #4 0x00007f2992451aa9 _ZNK17ZLGtkPaintContext11stringWidthEPKcib (zlui-gtk.so + 0x1daa9)
                #5 0x00007f2993b39738 _ZNK10ZLTextArea5Style9wordWidthERK10ZLTextWordiib (libzltext.so.0.13 + 0x19738)
                #6 0x00007f2993b43396 _ZN10ZLTextArea15processTextLineERNS_5StyleERK16ZLTextWordCursorS4_ (libzltext.so.0.13 + 0x23>
                #7 0x00007f2993b3b82b _ZN20ZLTextAreaController10buildInfosERK16ZLTextWordCursor (libzltext.so.0.13 + 0x1b82b)
                #8 0x00007f2993b3ce64 n/a (libzltext.so.0.13 + 0x1ce64)
                #9 0x00007f2993b523af _ZN10ZLTextView16preparePaintInfoEv (libzltext.so.0.13 + 0x323af)
                #10 0x000056522565e65d n/a (FBReader + 0x4d65d)
                #11 0x00007f2993b52541 _ZN10ZLTextView5paintEv (libzltext.so.0.13 + 0x32541)
                #12 0x0000565225658e9c n/a (FBReader + 0x47e9c)
                #13 0x00007f2992458d40 _ZN15ZLGtkViewWidget7doPaintEv (zlui-gtk.so + 0x24d40)
                #14 0x00007f29920fb357 n/a (libgtk-x11-2.0.so.0 + 0x141357)
                #15 0x00007f2991e15d2f g_closure_invoke (libgobject-2.0.so.0 + 0x14d2f)
                #16 0x00007f2991e31b76 n/a (libgobject-2.0.so.0 + 0x30b76)
                #17 0x00007f2991e32f66 g_signal_emit_valist (libgobject-2.0.so.0 + 0x31f66)
                #18 0x00007f2991e337a3 g_signal_emit (libgobject-2.0.so.0 + 0x327a3)
                #19 0x00007f29922297a4 n/a (libgtk-x11-2.0.so.0 + 0x26f7a4)
                #20 0x00007f2992101c85 gtk_main_do_event (libgtk-x11-2.0.so.0 + 0x147c85)
                #21 0x00007f2991f48199 n/a (libgdk-x11-2.0.so.0 + 0x50199)
                #22 0x00007f2991f4811f n/a (libgdk-x11-2.0.so.0 + 0x5011f)
                #23 0x00007f2991f3d332 n/a (libgdk-x11-2.0.so.0 + 0x45332)
                #24 0x00007f2991f3e088 gdk_window_process_all_updates (libgdk-x11-2.0.so.0 + 0x46088)
                #25 0x00007f2991f3e12d n/a (libgdk-x11-2.0.so.0 + 0x4612d)
                #26 0x00007f2991f193e9 n/a (libgdk-x11-2.0.so.0 + 0x213e9)
                #27 0x00007f2991d1cc24 g_main_context_dispatch (libglib-2.0.so.0 + 0x55c24)
                #28 0x00007f2991d716e8 n/a (libglib-2.0.so.0 + 0xaa6e8)
                #29 0x00007f2991d1a3c3 g_main_context_iteration (libglib-2.0.so.0 + 0x533c3)
                #30 0x00007f29920ff505 gtk_main_iteration (libgtk-x11-2.0.so.0 + 0x145505)
                #31 0x00007f299245a8f5 _ZN22ZLGtkApplicationWindow16processAllEventsEv (zlui-gtk.so + 0x268f5)
                #32 0x00007f299245b44d _ZN22ZLGtkApplicationWindow7refreshEv (zlui-gtk.so + 0x2744d)
                #33 0x0000565225667e3d n/a (FBReader + 0x56e3d)
                #34 0x000056522566c4c9 n/a (FBReader + 0x5b4c9)
                #35 0x00007f2993ad63e9 _ZN13ZLApplication13doActionByKeyERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE (lib>
                #36 0x00007f299245e1ad _ZN22ZLGtkApplicationWindow18handleKeyEventSlotEP12_GdkEventKey (zlui-gtk.so + 0x2a1ad)
                #37 0x00007f29920fb357 n/a (libgtk-x11-2.0.so.0 + 0x141357)
                #38 0x00007f2991e15d2f g_closure_invoke (libgobject-2.0.so.0 + 0x14d2f)
                #39 0x00007f2991e31b76 n/a (libgobject-2.0.so.0 + 0x30b76)
                #40 0x00007f2991e32f66 g_signal_emit_valist (libgobject-2.0.so.0 + 0x31f66)
                #41 0x00007f2991e337a3 g_signal_emit (libgobject-2.0.so.0 + 0x327a3)
                #42 0x00007f29922297a4 n/a (libgtk-x11-2.0.so.0 + 0x26f7a4)
                #43 0x00007f29921000dc gtk_propagate_event (libgtk-x11-2.0.so.0 + 0x1460dc)
                #44 0x00007f29921016fb gtk_main_do_event (libgtk-x11-2.0.so.0 + 0x1476fb)
                #45 0x00007f2991f5f77f n/a (libgdk-x11-2.0.so.0 + 0x6777f)
                #46 0x00007f2991d1cd1b g_main_context_dispatch (libglib-2.0.so.0 + 0x55d1b)
                #47 0x00007f2991d716e8 n/a (libglib-2.0.so.0 + 0xaa6e8)
                #48 0x00007f2991d1c293 g_main_loop_run (libglib-2.0.so.0 + 0x55293)
                #49 0x00007f29920ff242 gtk_main (libgtk-x11-2.0.so.0 + 0x145242)
                #50 0x00007f299245920b _ZN26ZLGtkLibraryImplementation3runEP13ZLApplication (zlui-gtk.so + 0x2520b)
                #51 0x000056522563d791 n/a (FBReader + 0x2c791)
                #52 0x00007f2993513d90 __libc_start_call_main (libc.so.6 + 0x29d90)
                #53 0x00007f2993513e40 __libc_start_main_impl (libc.so.6 + 0x29e40)
                #54 0x0000565225641855 n/a (FBReader + 0x30855)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.