QtPass configuration windows do not show in Task Manager on LXQt Panel

The configuration windows of QtPass do not show on their own in the Task Manager. This is especially troubling during the first setup, as there is no main window of QtPass open. In effect, QtPass does not show at all in the Task Manager during the first setup.
A minimized configuration window can still be restored using Alt-Tab.
The issue still occurs for configuration window/dialog opened from the main program window, but the impact in this case is much smaller, as the configuration minimizes and restores together with the main program window.

Steps to reproduce:
1. Launch Lubuntu 21.10 in live session/on a fresh install
2. Launch QtPass
3. Pay attention to the Task Manager section of the Panel

Result:
Task Manager is empty

Expected result:
QtPass configuration windows show up on the Panel

Reproduction rate:
5/5

Hardware:
Lenovo Yoga 300-11IBR (Intel N3060 1.60 GHz, 2 GiB RAM, N3060 integrated graphics)

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: qtpass 1.3.2-3
ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13
Uname: Linux 5.13.0-16-generic x86_64
ApportVersion: 2.20.11-0ubuntu69
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.465
CurrentDesktop: LXQt
Date: Tue Sep 28 20:41:21 2021
LiveMediaBuild: Lubuntu 21.10 "Impish Indri" - Beta amd64 (20210927)
SourcePackage: qtpass
UpgradeStatus: No upgrade log present (probably fresh install)