XnViewMP bug with Kubuntu 26.04 LTS

[nyctalope]

I use XnViewMP (XnView_MP.glibc2.34-x86_64.AppImage) on Linux Kubuntu 26.04 LTS.
When I try to move some files from a directory to another, xnviewmp freezes.
After a few time, a windows appear and then a message say that xnviewmp is not responding and I have to close it.
I copy/paste the logs:

PID: 7921 (XnView)
UID: 1000 (blabla)
GID: 1000 (blabla)
Signal: 6 (ABRT)
Timestamp: Wed 2026-05-20 18:03:42 CEST (6s ago)
Command Line: /tmp/.mount_XnViewjhJJbM/usr/XnView/XnView
Executable: /tmp/.mount_XnViewjhJJbM/usr/XnView/XnView
Control Group: /user.slice/user-1000.slice/[email protected]/app.slice/[email protected]
Unit: [email protected]
User Unit: [email protected]
Slice: user-1000.slice
Owner UID: 1000 (blabla)
Boot ID: a19d5f6f3392482caf24f522578453f0
Machine ID: b8e125839822494b93d6f5156efccd05
Hostname: blabla
Storage: /var/lib/systemd/coredump/core.XnView.1000.a19d5f6f3392482caf24f522578453f0.7921.1779293022000000.zst (present)
Size on Disk: 14.3M
Message: Process 7921 (XnView) of user 1000 dumped core.

Module linux-vdso.so.1 from deb linux-7.0.0-15.15.amd64
Module libgraphite2.so.3 from deb graphite2-1.3.14-11ubuntu1.amd64
Module libharfbuzz.so.0 from deb harfbuzz-12.3.2-2.amd64
Module libmd.so.0 from deb libmd-1.1.0-2build4.amd64
Module libbsd.so.0 from deb libbsd-0.12.2-2build2.amd64
Module libtinfo.so.6 from deb ncurses-6.6+20251231-1.amd64
Module libpciaccess.so.0 from deb libpciaccess-0.18.1-1ubuntu4.amd64
Module libxml2.so.16 from deb libxml2-2.15.2+dfsg-0.1.amd64
Module libedit.so.2 from deb libedit-3.1-20251016-1.amd64
Module libdrm_intel.so.1 from deb libdrm-2.4.131-1.amd64
Module libdrm_amdgpu.so.1 from deb libdrm-2.4.131-1.amd64
Module libelf.so.1 from deb elfutils-0.194-4.amd64
Module libxshmfence.so.1 from deb libxshmfence-1.3.3-1build1.amd64
Module libxcb-sync.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libsensors.so.5 from deb lm-sensors-1:3.6.2-2build1.amd64
Module libzstd.so.1 from deb libzstd-1.5.7+dfsg-3.amd64
Module libLLVM.so.21.1 from deb llvm-toolchain-21-1:21.1.8-6ubuntu1.amd64
Module libxcb-present.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libxcb-dri3.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libxcb-xfixes.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libxcb-randr.so.0 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libgallium-26.0.3-1ubuntu1.so from deb mesa-26.0.3-1ubuntu1.amd64
Module libEGL_mesa.so.0 from deb mesa-26.0.3-1ubuntu1.amd64
Module libwayland-egl.so.1 from deb wayland-1.24.0-2.amd64
Module libEGL.so.1 from deb libglvnd-1.7.0-3.amd64
Module libpng16.so.16 from deb libpng1.6-1.6.57-1.amd64
Module libfreetype.so.6 from deb freetype-2.14.2+dfsg-1.amd64
Module libfontconfig.so.1 from deb fontconfig-2.17.1-3ubuntu1.amd64
Module libxkbcommon.so.0 from deb libxkbcommon-1.13.1-1.amd64
Module libvulkan.so.1 from deb vulkan-loader-1.4.341.0-1.amd64
Module libgpg-error.so.0 from deb libgpg-error-1.58-2.amd64
Module libcom_err.so.2 from deb e2fsprogs-1.47.2-3ubuntu4.amd64
Module libexpat.so.1 from deb expat-2.7.4-1.amd64
Module libffi.so.8 from deb libffi-3.5.2-4.amd64
Module libXdmcp.so.6 from deb libxdmcp-1:1.1.5-2.amd64
Module libXau.so.6 from deb libxau-1:1.0.11-1build2.amd64
Module libGLX.so.0 from deb libglvnd-1.7.0-3.amd64
Module libGLdispatch.so.0 from deb libglvnd-1.7.0-3.amd64
Module libdbus-1.so.3 from deb dbus-1.16.2-2ubuntu4.amd64
Module libz.so.1 from deb zlib-1:1.3.dfsg+really1.3.1-1ubuntu3.amd64
Module libdrm.so.2 from deb libdrm-2.4.131-1.amd64
Module libgbm.so.1 from deb mesa-26.0.3-1ubuntu1.amd64
Module libwayland-client.so.0 from deb wayland-1.24.0-2.amd64
Module libxcb.so.1 from deb libxcb-1.17.0-2ubuntu1.amd64
Module libX11-xcb.so.1 from deb libx11-2:1.8.13-1.amd64
Module libGL.so.1 from deb libglvnd-1.7.0-3.amd64
Module libasound.so.2 from deb alsa-lib-1.2.15.3-1ubuntu1.amd64
Module libstdc++.so.6 from deb gcc-16-16-20260322-1ubuntu1.amd64
Module libgcc_s.so.1 from deb gcc-16-16-20260322-1ubuntu1.amd64
Module libX11.so.6 from deb libx11-2:1.8.13-1.amd64
Stack trace of thread 7921:
#0 0x0000701d798acae2 __syscall_cancel_arch (libc.so.6 + 0xacae2)
#1 0x0000701d798a067c __internal_syscall_cancel (libc.so.6 + 0xa067c)
#2 0x0000701d799283ae __GI___libc_read (libc.so.6 + 0x1283ae)
#3 0x0000701d79e1335c n/a (/tmp/.mount_XnViewjhJJbM/usr/XnView/lib/libQt5Core.so.5.15.19 + 0x21335c)
#4 0x0000701d79c951a0 n/a (/tmp/.mount_XnViewjhJJbM/usr/XnView/lib/libQt5Core.so.5.15.19 + 0x951a0)
#5 0x0000701d7cd6335c n/a (/tmp/.mount_XnViewjhJJbM/usr/XnView/lib/libQt5Widgets.so.5.15.19 + 0x16335c)
#6 0x0000000000000000 n/a (n/a + 0x0)
ELF object binary architecture: AMD x86-64

I also tried with an older version (XnView_MP.glibc2.17-x86_64.AppImage) but the problem is the same. There is no issue with Kubuntu 24.04LTS

[xnview]

Wayland?

[nyctalope]

Wayland?

Yes

[xnview]

there is some problems between Qt5 & Wayland