Sleep fails in Plasma Desktop Session but works in Gaming Mode

System: Bazzite OS on a PC with a MSI MPG B550 motherboard and an AMD RX 7600 GPU. Problem: The system fails to suspend correctly when logged into the Plasma Desktop session. The screens go black, but the PC remains on and unresponsive. Diagnostics Done: Suspend works perfectly when initiated from Gaming Mode. Suspend fails when initiated from the Plasma Desktop session. The failure happens even when using the direct command sudo systemctl suspend from a terminal within the desktop session, plus it started happening after rebasing from deck:stable to bazzite:stable. Conclusion: This indicates a software component or service loaded exclusively with the Plasma Desktop session is placing a low-level inhibitor lock on systemd's suspend function.