Fails to save changes to image

[jessicarod7]

Description

When editing an image and attempting to save changes back to the image, an error is raised:

Failed to reload /run/user/<uid>/doc/<some hash>/<filename>

The original file is cleared and written back with zero bytes. However, another file with the saved edits is created next to it, named .xdp-<filename> (deleted)-<random_identifier).

Here are screenshots of Flatseal, showing no changes to recognized paths has been made:

Steps to reproduce the bug

1. Open an image from the file explorer, or using the app's built-in Open dialog (tested with PNGs in both ~/Pictures/Screenshots and ~/Downloads).
2. Draw a rectangle on the image.
3. Click Save in the top-right corner.
4. Error in first screenshot appears, and the files are modified as seen in the second image.

System

• Device (desktop computer/tablet/phone/...): HP Spectre x360 Convertible 13-aw0xxx
• OS: Fedora Linux 42 (Workstation Edition) (kernel Linux 6.17.7-200.fc42.x86_64)
• Desktop environment: GNOME 48.6 + Mutter (Wayland)
• Package format: Flatpak (Flathub)
• App version: 1.0.2

[bidossessi]

Seconded. Same issue on Ubuntu 24.04 and version 1.0.2 from flatpak.
Reverting to commit 5a0049d4a88628d9a86ebebb2cd6a1e826366d9c1bb5318d83b9bbacbc7d4ecc fixes the issue for me.