This is somewhat expected. In Ubuntu 24.04 the file chooser dialog is
provided by GtkFileChooser, which supports querying existing thumbnails
but not generating new ones.
When you then open Nautilus the thumbnail is generated, and the file
chooser can show it.
In Ubuntu 24.10 and later, the file chooser dialog is provided directly
by Nautilus so it will be able to generate thumbnails on-the-fly.
For 24.04 and lower I'm afraid this is a Wont-Fix.
** Changed in: nautilus (Ubuntu)
Status: New => Fix Released
** Also affects: nautilus (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: nautilus (Ubuntu Noble)
Status: New => Won't Fix
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Packages, which is subscribed to nautilus in Ubuntu.
https://bugs.launchpad.net/bugs/2106450
Title:
The Open dialog of apps, don't show thumbnails for just downloaded
files
Status in nautilus package in Ubuntu:
Fix Released
Status in nautilus source package in Noble:
Won't Fix
Bug description:
## Overview
Follow these steps to reproduce the bug:
1- Open an app such as Firefox or Chrome (let's assume Firefox)
2- Perform an operation that downloads a file of a type that Nautilus can
generate thumbnails for
3- Then click on the Open File
You'll see that Ubuntu doesn't show the thumbnail for the just
downloaded file.
4- Open Nautilus and open the folder where you downloaded the file into
5- It shows the thumbnail
6- Go back to Firefox and click on Open again.
You'll see that Ubuntu shows the thumbnail this time.
---
A screen recording showing the problem is attached.
---
### Expected behavior:
When an image file is downloaded, show the thumbnail as soon as you
click on the Open File
### Actual behavior
When an image file is downloaded, the Open File dialog doesn't show the image
thumbnail
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: nautilus 1:46.2-0ubuntu0.3
ProcVersionSignature: Ubuntu 6.11.0-21.21~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-21-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 8 07:57:50 2025
GsettingsChanges: b'org.gnome.nautilus.preferences' b'migrated-gtk-settings'
b'true'
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_nautilus: nautilus-extension-gnome-terminal 3.52.0-1ubuntu2
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