Dear Maintainer, I have a pi400 and upgraded it to debian 12. I configured a new panel since the one I had was clumsy, with the classical : menu then launcher then taskbar then several system icons The icons of the launcher are too large compared to the button size so they are cut at the top and not well centered I suspect a margin/padding problem (I do not know gtk, just judging from my CSS, SwiftUI and swing knowledge), I do not know if it is linked to the raspberry pi. I deleted all files from the original installation in /etc/xdg/lxpanel and only have the default files. I also deleted previous .config/lxpanel to have it created by configuration dialog.
Here are the lines of run.log which concern lxpanel : ** Message: 10:05:10.396: settings.vala:373: Settings default for Session, launcher_manager, command : lxpanelctl ** Message: 10:05:10.420: app.vala:76: Launching lxpanel ** (lxpanel:7148): WARNING **: 10:05:11.213: The directory '/home/xxx/Templates' doesn't exist, ignoring it ** (lxpanel:7148): WARNING **: 10:05:11.638: lxpanel: can't load cputemp plugin ** (lxpanel:7148): WARNING **: 10:05:11.650: lxpanel: can't load dhcpcdui plugin ** (lxpanel:7148): WARNING **: 10:27:47.818: lxpanel : X error: BadMatch (invalid parameter attributes) ** (lxpanel:7148): WARNING **: 11:07:47.691: lxpanel : X error: BadMatch (invalid parameter attributes) ** (lxpanel:7148): WARNING **: 11:07:49.810: lxpanel : X error: BadMatch (invalid parameter attributes) ** (lxpanel:7148): WARNING **: 11:07:57.335: lxpanel : X error: BadMatch (invalid parameter attributes)