Project files not opening in thunar file manager.

[lankv2]

Pixelorama version:
1.1.8-stable

Where did you download Pixelorama from?
flatpak - flathub

OS/device including version:
LMDE7 - Debian 13 Trixie

Issue description:
Program does not open project file when opening with thunar file manager. It starts with a blank project.

Expected behavior: Open the project file in the program from thunar.

Steps to reproduce:
Make sure Pixelorama is set to default program for pxo files.
Go to pxo file in thunar file manager, then double click the file.