Ubuntu ubuntu-22.04: Yelp does not display the Ubuntu documentation

[Simos Xenitellis ]

Yelp does not show the Ubuntu documentation (Ubuntu User Guide) when you launch it.

Tested both with the en_US and el_GR locales.

What happens: When you click on Help, the yelp application opens but the window is blank, empty.
What should happen: Yelp should display the Ubuntu documentation.

What is going on though: Yelp does open the Ubuntu documentation but everything appears white. As if an overlay is covering the documentation. See attached screenshots.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: yelp 42.0-1
ProcVersionSignature: Ubuntu 5.15.0-23.23-generic 5.15.27
Uname: Linux 5.15.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu80
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 2 23:47:27 2022
InstallationDate: Installed on 2022-04-01 (0 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20220326)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=el_GR.UTF-8
 SHELL=/bin/bash
SourcePackage: yelp
UpgradeStatus: No upgrade log present (probably fresh install)

[Simos Xenitellis  (simosx)]

Here I typed Cltr+A to Select All in the Yelp window and blindly tried to move the selected content with the mouse.

Indeed, the documentation is there but it appears all white in the Yelp window.

[Simos Xenitellis  (simosx)]

Now Yelp crashes when I launch it.

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
--Type <RET> for more, q to quit, c to continue without paging--
Core was generated by `yelp'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f5933ab030b in ?? ()
   from /lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
[Current thread is 1 (Thread 0x7f592cb87ac0 (LWP 11238))]
(gdb) where
#0 0x00007f5933ab030b in ?? ()
   from /lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#1 0x00007f592f178e2e in ?? () from /lib/x86_64-linux-gnu/libffi.so.8
#2 0x00007f592f175493 in ?? () from /lib/x86_64-linux-gnu/libffi.so.8
#3 0x00007f592f87a2c0 in ?? ()
   from /lib/x86_64-linux-gnu/libwayland-server.so.0
#4 0x00007f592f87e4c4 in ?? ()
   from /lib/x86_64-linux-gnu/libwayland-server.so.0
#5 0x00007f592f87cf4a in wl_event_loop_dispatch ()
   from /lib/x86_64-linux-gnu/libwayland-server.so.0
#6 0x00007f593406a3f3 in ?? ()
   from /lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#7 0x00007f5930d0fd1b in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x00007f5930d646f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9 0x00007f5930d0d3c3 in g_main_context_iteration ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f5932679915 in g_application_run ()
   from /lib/x86_64-linux-gnu/libgio-2.0.so.0
#11 0x00007f5930ab9d90 in __libc_start_call_main (
    main=main@entry=0x55c778b6ef50 <main>, argc=argc@entry=1,
    argv=argv@entry=0x7ffd1ebd6798)
    at ../sysdeps/nptl/libc_start_call_main.h:58
--Type <RET> for more, q to quit, c to continue without paging--
#12 0x00007f5930ab9e40 in __libc_start_main_impl (main=0x55c778b6ef50 <main>, argc=1, argv=0x7ffd1ebd6798, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd1ebd6788)
    at ../csu/libc-start.c:392
#13 0x000055c778b6eff5 in _start ()
(gdb)

[Jeremy Bícha (jbicha)]

This bug has already been reported so I'm marking this a duplicate of bug 1966418