Doesn't show or download images/videos

[misc-de]

I installed the latest Signal (7.36.1) via Flatpak (1.14.10) on my FLX1 device, but somethings won't work and i don't know why...

I see recieved images or videos but i can't show then, there only blurred. If I touch one of the images or videos, the loading bar is active for some seconds an stops without any response. This behavior is new to me and I don't know what could be causing it, perhaps due to missing permissions.

flatpak info --show-permissions org.signal.Signal

[Context]
shared=network;ipc;
sockets=x11;wayland;pulseaudio;
devices=all;
filesystems=home;

[Session Bus Policy]
com.canonical.indicator.application=talk
org.freedesktop.portal.Fcitx=talk
org.freedesktop.PowerManagement=talk
org.kde.StatusNotifierWatcher=talk
org.freedesktop.ScreenSaver=talk
org.gnome.Mutter.IdleMonitor=talk
com.canonical.AppMenu.Registrar=talk
org.gnome.SessionManager=talk
org.ayatana.indicator.application=talk

[System Bus Policy]
org.freedesktop.login1=talk

[Environment]
SIGNAL_DISABLE_GPU=0
SIGNAL_USE_TRAY_ICON=0
SIGNAL_USE_WAYLAND=0
XCURSOR_PATH=/run/host/user-share/icons:/run/host/share/icons
SIGNAL_DISABLE_GPU_SANDBOX=0

[misc-de]

Is it possible the same problem ?
signalapp/Signal-Desktop#6744 (comment)
and
signalflatpak/signal#25