Both logs show a similar startup time upto mounting the network share, first is 35 seconds, second is slightly quicker at 34 seconds.
What are you actually seeing that shows it's not shutting down or taking a long time to shut down?
I tried exactly what you describe but can't replicate your issue with my Pi 3B+, GUI running in both Firefox & Chromium.
What are you actually seeing that shows it's not shutting down or taking a long time to shut down?
I tried exactly what you describe but can't replicate your issue with my Pi 3B+, GUI running in both Firefox & Chromium.