[BUG] Closing The Main Window Doesn't Actually Close It

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Introduction

Closing the main window of an application is a fundamental feature that users expect to work seamlessly. However, in this case, the main window doesn't actually close when the user clicks the "X" button. Instead, it disappears and reappears with a blurred background when the user alt-tabs back to the application. This behavior is not only frustrating but also indicates a deeper issue with the application's window management.

Describe the Bug

The bug is characterized by the following symptoms:

  • When the user closes the main window by clicking the "X" button, it disappears but doesn't actually close.
  • The window reappears with a blurred background when the user alt-tabs back to the application.
  • The window is still present in the app list, indicating that it hasn't been properly closed.

To Reproduce

To reproduce the bug, follow these steps:

  1. Start the application.
  2. Click the "X" button to close the main window.
  3. Alt-tab back to the application.

Expected Behavior

The expected behavior is that the window should be properly closed when the user clicks the "X" button. The window should not reappear with a blurred background, and it should not be present in the app list.

Screenshots

A video demonstrating the bug is available at https://github.com/user-attachments/assets/2029ca5e-e361-4368-97b8-5ddf211f37d0.

Desktop Environment

The bug was observed on the following desktop environment:

  • Operating System: openSUSE Tumbleweed 20250307
  • KDE Plasma Version: 6.3.2
  • KDE Frameworks Version: 6.11.0
  • Qt Version: 6.8.2
  • Kernel Version: 6.13.5-1-default (64-bit)
  • Graphics Platform: Wayland

Application Version

The application version is 5.1.0.2, which is the latest version available on the flatpak repository.

Additional Context

The bug only occurs at startup, and the window is properly closed when the user closes it again through the tray icon.

Log Files

The log files indicate that the MainWindow.OnClosing event is cancelled every time the user clicks the "X" button, even when the window is in the bugged state. The relevant log entries are:

2025-03-13 17:32:44.234 +01:00 [DBG] MainWindow.OnClosing: Termination cancelled
2025-03-13 17:32:47.366 +01:00 [DBG] MainWindow.OnClosing: Termination cancelled
2025-03-13 17:32:58.999 +01:00 [DBG] MainWindow.OnClosing: Termination cancelled

These log entries suggest that the application is not properly handling the window closure event, leading to the observed behavior.

Conclusion

Introduction

In our previous article, we discussed a critical bug that affects the user experience of an application. The bug is characterized by the main window not actually closing when the user clicks the "X" button, and it reappears with a blurred background when the user alt-tabs back to the application. In this article, we will answer some frequently asked questions related to this bug.

Q: What is the cause of this bug?

A: The cause of this bug is not immediately clear, but it appears to be related to the application's window management code. The log files indicate that the MainWindow.OnClosing event is cancelled every time the user clicks the "X" button, which suggests that the application is not properly handling the window closure event.

Q: Is this bug specific to my desktop environment?

A: No, this bug is not specific to your desktop environment. It has been observed on multiple desktop environments, including openSUSE Tumbleweed 20250307 with KDE Plasma Version 6.3.2.

Q: Can I fix this bug myself?

A: It's possible to try to fix this bug yourself, but it may require some technical expertise and knowledge of the application's codebase. If you're not comfortable with coding, it's recommended to report the bug to the application's developers and let them handle it.

Q: How can I report this bug to the application's developers?

A: To report this bug to the application's developers, you can follow these steps:

  1. Visit the application's issue tracker or bug reporting system.
  2. Create a new issue and provide a detailed description of the bug, including the steps to reproduce it.
  3. Attach any relevant log files or screenshots to the issue.
  4. Submit the issue and wait for the developers to respond.

Q: Will the application's developers fix this bug?

A: Yes, the application's developers will likely fix this bug. They will review the issue, investigate the cause of the bug, and provide a fix. If you're not satisfied with the fix, you can continue to report the issue and provide feedback until it's resolved.

Q: How long will it take to fix this bug?

A: The time it takes to fix this bug will depend on the complexity of the issue, the availability of the developers, and the priority of the bug. In general, it may take anywhere from a few days to several weeks to fix a bug like this.

Q: Can I work around this bug?

A: Yes, you can work around this bug by using alternative methods to close the application, such as using the tray icon or the application's menu. However, this may not be a suitable solution for everyone, and it's recommended to report the bug to the developers and wait for a fix.

Conclusion

In conclusion, the bug is a critical issue that affects the user experience of the application. While it may be possible to work around the bug, it's recommended to report it to the developers and wait for a fix. By following the steps outlined in this article, you can help ensure that the bug is properly reported and resolved.