Is the eyeball on in the track header?
Yes, It's on.
Do you have your preview monitor set to "fit" ?
Maybe you have your bug off screen
when you double click your title and edit it can you see it in the editor ?
Have you done any motion with it ?
It seems odd that you cant see it.
Any layer above should have it seen as long as nothing is above blocking it.
Maybe opacity has been turned on ?
Just some guesses.
Post a screen capture and maybe someone will have other ideas.
Along with GLen's suggestions (the screen-cap is often a lot of help), check the fixed Effect>Opacity on that Title, as one can accidentally drag its "rubberband" to 0, when doing other things. That would account for not seeing the Title. In Video Track 2, there should be a yellow/orange line, if Opacity View is toggled ON, and it should be up near the very top of that Clip. One can also see the Opacity setting, by Selecting that Title, and looking in the Effects Control Panel.