vala-panel crashes when you remove Panel Items

Resolved upstream bug-report - https://gitlab.com/vala-panel-project/vala-panel/-/issues/113#note_323453115

Ubuntu 20.04, vala-panel from repository (version 0.4.91+dfsg1-2). Panel crashes when you try to remove Panel Items. Tested on XFCE4 session and GNOME X session.

Steps to Reproduce

1) Launch vala-panel from terminal
2) Right click on panel > "Panel Items" - "Applets"
3) Try to remove any applet
4) Panel will crash

It's possible to add items (like "AppMenu Plugin") but removal, at least for me, only doable via config editing.

Please include patch from upstream.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: vala-panel 0.4.91+dfsg1-2
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 15 00:13:01 2020
InstallationDate: Installed on 2020-02-15 (58 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124)
SourcePackage: vala-panel
UpgradeStatus: No upgrade log present (probably fresh install)