It is not a visual glitch (well, the horizontal line when no actions are displayed is, that is fixed on the next release). If you do not see actions it is not because of the row but because there are no actions to perform on those extension.
What actions are available in the top row that are missing on the bottom ones? Queue add/remove/pause are not only dependant on the fop2 permissions, but also the "restrict members" options in FreePBX queue config. Try setting an email in the fop2 buttons page for any extension in the bottom rows, reload fop2 and then see if the send email appears or not.
