KeePassXC does not read password from clipboard after locked out of inactivity

As reported in the KeePassXC repository , KeePassXC doesn't work correctly due to a Qt bug when on Wayland.

1. Overview

KeePassXC fails to read anything from clipboard after it locks out of inactivity. Closing the application and reopening fixes it temporarily. The issue reappears after timeout. Manually typing the password in the input box works.

1. Steps to Reproduce

1. Open KeePassXC and select database to open.
2. Enter database password and open it.
3. Wait for the application to be locked out after designated timeout.
4. Copy the database password from text file/password manager and paste in the input box.
5. KeePassXC will not take any input and all options from the right-click context menu are greyed out. As it seems KeePassXC does not think anything is in the clipboard.
6. Close the application and reopen it.
7. Follow step 4, this time it will work.
8. Wait for timeout again and repeat step 4, it will fail again.

1. Expected Behavior

KeePassXC should take password from clipboard even after it is locked.

1. Actual Behavior

KeePassXC does not take password if locked out after inactivity.

1. Context

KeePassXC is installed from the official Fedora repository. This issue is also reproducible in the AppImage. Initially I've thought the KDE clipboard manager klipper is doing this, but disabling klipper has no effect. The copied password can be pasted anywhere except KeePassXC, so I do not think it's a system issue.

KeePassXC - Version 2.7.1
Revision: 5916a8f

Qt 5.15.2
Debugging mode is disabled.

Operating system: Fedora Linux 35 (KDE Plasma)
CPU architecture: x86_64
Kernel: linux 5.16.20-200.fc35.x86_64
Windowing System: Wayland

Enabled extensions:

• Auto-Type
• Browser Integration
• SSH Agent
• KeeShare
• YubiKey
• Secret Service Integration

Cryptographic libraries:

• Botan 2.18.2