No, I don't have any text-entry applet on either panel.
About bug #45974 I doubt it's related: I did remove the default "menu" applet (the one with the Applications/Locations/System menus) and replaced it with the single-icon menu. However the same issue appears for both panels.
bug #4873 seems to be about a sliding panel. Mine isn't sliding, it hides "towards its edge" rather than "to the side". (It doesn't have the arrows either.)
No, I don't have any text-entry applet on either panel.
About bug #45974 I doubt it's related: I did remove the default "menu" applet (the one with the Applications/ Locations/ System menus) and replaced it with the single-icon menu. However the same issue appears for both panels.
bug #4873 seems to be about a sliding panel. Mine isn't sliding, it hides "towards its edge" rather than "to the side". (It doesn't have the arrows either.)