pandora window can't be closed, and it doesn't work

[Dima]

4) I can't close the pandora window. Cancel and close window doesn't work. It closes with GIMP only.

And pandora doesn't do anything.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: pandora 0.7.1-0ubuntu4
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: LXDE
Date: Sun Dec 30 18:46:16 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-06-11 (202 days ago)
InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: pandora
UpgradeStatus: No upgrade log present (probably fresh install)