User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0

Steps to reproduce:

In Firefox (as well as Thunderbird) when you want to save a file, a windows is opening to choose where to save it. In grid view, the icons of files and folders are giant and nothing works to minimize them, neither Ctrl -, nor the mouse wheel down.
NB. Ubuntu 24.04 with applications installed in Snap.

Actual results:

Icons of files and folders are very very big in (Nautilus) grid view when you want to save a file, like a .pdf for example from a website.
The same for a mail in Thunderbird (Save as > File ...) of course in grid view also.

Expected results:

I think Firefox and Thunderbird should follow the user's configuration and display the icons in the “Save” window at the size he wants.
Or alternatively, you can no longer offer the choice of displaying this window in "grid view", but only in list mode, as more and more applications seem to have opted for.
Although I deplore this “evolution”, I understand that it may be the best way to maintain applications.

The Bugbug bot thinks this bug should belong to the 'Core::Layout: Grid' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

I don't see this locally, but I'm not using the snap version of Firefox. Since you specifically mentioned 'snap' version - do you happen to know if this issue is specific to that?

If so, I'd imagine it's due to the permissions-restrictions that are placed on the snap - perhaps it's unable to read your nautilus preferences, or something along those lines.

Can you share screenshots ? I'm also wondering since you mention lack of options if it's not just a result of the XDG Desktop portal. Snap packages (like Flatpak) needs to use this, they can't use the native file picker.

Hi,

Thank you for your interest in this bug.

I can not tell if it is only for Snap version of Firefox (I'm not using .deb package).

I have tried, with no success, different things to resolved this, like:
1- Changing icon theme;
2- Searching some key in dconf-editor;
3- create a file "settings.ini"
in ~/snap/firefox/current/.config/gtk-3.0/
with this CSS :

   .nautilus-icon-container {
      min-width: 32px;
      min-height: 32px;
      max-width: 64px;
      max-height: 64px;
   }

About XDG Desktop portal I check this:
echo $GTK_USE_PORTAL
The answer is:

ii xdg-desktop-portal 1.18.4-1ubuntu2.24.04.1 amd64 desktop integration portal for Flatpak and Snap
ii xdg-desktop-portal-gnome 46.2-0ubuntu1 amd64 GNOME portal backend for xdg-desktop-portal
ii xdg-desktop-portal-gtk 1.15.1-1build2 amd64 GTK+/GNOME portal backend for xdg-desktop-portal

It seems to be OK.

I also check with no success (to force a manual ladder):
gsettings set org.gnome.desktop.interface scaling-factor 1

One thing important to say, I notice that with Gnome-Text-Editor I had the same problem of giant icons in grid mode, but Gnome-Text-Editor is not install with Snap. So I have discovered just now it is not only a bug in Firefox or Thunderbird, but in Ubuntu + Gnome for apps that use probably GTK 4 and/or XDG portals. I'm not sure, but maybe Gnome-Text-Editor use also XDG portals for this kind of windows too?

Thanks for reading and let me know if you need more information or if you'd like me to do some more tests?

Thanks, to me it's just the normal XDG Desktop Portal look and canonical people confirmed it. I'm going to close this as invalid because it's not a bug. Maybe worth filing upstream against XDG Desktop to report ?