Description of problem:
https://bodhi.fedoraproject.org/updates/FEDORA-2019-d5bd5f0aa4 fixes a security issue and a gdm-tty-switching problem. But there is no separate bug for either of those issues (#1745554 got accepted as a Blocker, but is now used for a different facet of the same problem). So I'm opening this bug to ask for a freeze exception.
FEDORA-2019-d5bd5f0aa4 has been submitted as an update to Fedora 31. https://bodhi.fedoraproject.org/updates/FEDORA-2019-d5bd5f0aa4
Proposed as a Blocker for 31-beta by Fedora user zbyszek using the blocker tracking app because:
Solving the issue with tty switching is a pre-requisite for solving #1745554, which is already accepted as a blocker.
In addition, an important security issue is fixed.
systemd-243-1.fc31 has been pushed to the Fedora 31 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-d5bd5f0aa4
Discussed during the 2019-09-03 blocker review meeting: 
The decision to classify this bug as an "AcceptedBlocker" was made as it violates the following criterion:
"The default desktop background must be different from that of the last two stable releases."
systemd-243-1.fc31 has been pushed to the Fedora 31 stable repository. If problems still persist, please make note of it in this bug report.