My panel will not span monitors

Hey all!

I just ran into this issue today where my panel is only displayed on one monitor at a time, despite the “Span monitors” option being enabled. The panel spanned my dual monitor setup before this issue occurred. The “Span monitors” option is now greyed out, preventing any revision. Below is a screenshot of my current “Panel Preferences” configuration:

Thank you for your time, and I look forward to your response!

As I’m on KDE, I might not be of much help, but does this also happen in you create a new user and log in there???