GTK apps not shown in pager

Not sure when this started, but I've noticed that some(?) GTK application windows are not shown in my plasma pager. Thus far, I've seen this with Firefox, Thunderbird, and virt-manager. These windows *are* listed in the pager's tooltip, so it seems to be aware that the windows exist. For some reason, however, it's not showing the window outlines. Anyone else? -- ======================================================================== Ian Pilcher arequipeno(a)gmail.com -------- "I grew up before Mark Zuckerberg invented friendship" -------- ========================================================================