Copying OTP doesn't work under Wayland

[kode54]

Describe the bug Running 1.4.0-2 of the Arch package from extra, the OTP copy button doesn't work, either with QT_QPA_PLATFORM=xcb or =wayland.

To Reproduce Steps to reproduce the behavior:

1. Open qtpass
2. Select a password with OTP field
3. Click the OTP button
4. Observe clipboard hasn't changed

Expected behavior The clipboard should be overwritten with the generated OTP for the selected pass file.

Desktop (please complete the following information):

• OS/Distribution: Arch Linux
• Version 1.4.0-2

Additional context This is the official Arch package, from the extra repository.