[Bug] "Open main window" button fails when launching from notification bar on Ubuntu 24.04 (v4.0.21)

[amal-chandran]

Describe the bug
When opening Tockler from the notification bar/system tray, the "Open main window" button does nothing/doesn't respond.

Steps To Reproduce

1. Install/launch Tockler v4.0.21 on Ubuntu 24.04.3 LTS.
2. Let it run in tray.
3. Right-click tray icon → Open app from notification bar.
4. Click "Open main window" button.
5. No response.

Expected behavior
Main window should open.

Screenshots/Recordings

System info

• OS: Linux 6.14 Ubuntu 24.04.3 LTS (Noble Numbat)
• CPU: AMD Ryzen 7 5800H
• Memory: 27GB
• Desktop Environment: [e.g., GNOME/KDE - add yours]
• Tockler version: v4.0.21 (from https://github.com/MayGo/tockler/releases/tag/v4.0.21)