Transparent and unresponsive screensaver window on resume from suspend

[Douglas Silva]

When resuming from suspend (e.g. opening the laptop lid), I can see my desktop but I can't interact with it. I suppose the screensaver window is overlaying it, capturing all input. The unlock password prompt does not appear, so I switch to another tty, login and run `sudo killall xfce4-screensaver`. This lets me recover the desktop.

- Affects Xubuntu 22.10, but anything older is not affected.
- It happens about 60% of the time.
- I am also affected by this bug: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1532508

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: xfce4-screensaver 4.16.0-1
ProcVersionSignature: Ubuntu 5.19.0-23.24-generic 5.19.7
Uname: Linux 5.19.0-23-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Thu Nov 3 23:37:53 2022
InstallationDate: Installed on 2022-10-25 (9 days ago)
InstallationMedia: Xubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221018)
SourcePackage: xfce4-screensaver
UpgradeStatus: No upgrade log present (probably fresh install)