switching workspaces shotcut stops working

[sevku]

After a while of using Ubuntu Budgie, the keyboard keycombination for switching workspaces stops working. Iam not sure, what is triggering this or what package is causing this behavior.
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ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: Budgie:GNOME
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2019-02-21 (16 days ago)
InstallationMedia: Ubuntu-Budgie 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
Package: budgie-desktop 10.4+git20180830.02.f2dbc215fdb-0ubuntu1 [origin: LP-PPA-ubuntubudgie-backports]
PackageArchitecture: all
ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
Tags: bionic third-party-packages
Uname: Linux 4.18.0-15-generic x86_64
UnreportableReason: Das ist kein offizielles Ubuntu-Paket. Bitte entfernen Sie alle Pakete von Drittanbietern und wiederholen Sie den Vorgang.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

[fossfreedom (fossfreedom)]

please run

apport-collect 1819137

to attach more details about your installation

[sevku (severin-kunz)]

apport information

[sevku (severin-kunz)]

apport information

[sevku (severin-kunz)]

apport information

[fossfreedom (fossfreedom)]

Is this a permanent feature - or does it start working again after a reboot?

Does it work with a new user account?

[sevku (severin-kunz)]

It starts working again after a reboot

What I forgot to mention: the key shortcut for the terminal stops working too