I turn on my ThinkPad T14 laptop, enter the LUKS passphrase, see the SDDM login screen, connect an external monitor via USB-C cable to the laptop and the login screen disappears showing the previous LUKS passphrase screen which is non-functional, basically a wallpaper.

This happens on Fedora Kinoite 42.20250629.0 and 42.20250630.0.
The problem didn't exist on 42.20250624.0.

Don't know if it's related but kscreenlocker also started segfaulting at the same time (Bug 2375593) except it doesn't matter if a monitor is connected.

Reproducible: Always

Steps to Reproduce:
1. Boot computer
2. At SDDM login screen connect an external monitor
Actual Results:
The login screen disappears and basically what is a picture of the previous LUKS passphrase screen is displayed.

Expected Results:
The login screen continues to work and is mirrored to the new monitor.

Additional Information:
Segfault from the logs (I'll also attach a full log):
Jun 30 14:21:35 db-tp kernel: sddm-greeter-qt[1557]: segfault at 1b ip 00007fab6d6dd19d sp 00007ffdd23de730 error 4 in d8a22d47e187298e95f6673634de3a4d863dce8205e994c89020d8e82c05bb.file[319d,7fab6d6da000+7000] likely on CPU 5 (core 1, socket 0)
Jun 30 14:21:35 db-tp kernel: Code: be 02 00 00 00 4c 89 e7 31 c0 e8 2e da ff ff 49 83 7e 10 00 0f 85 8b 00 00 00 49 8b 87 b0 01 00 00 48 85 c0 74 32 4c 8b 63 18 <4c> 8b 70 18 44 8b 6d a8 4c 89 e7 e8 53 d9 ff ff 48 83 ec 08 31 d2