On Ubuntu, the text of the current verse/chapter (as of last exit from Xiphos) seems to be present but invisible in the Standard View pane.
Clicking the bottom tabs to switch back and forth between Parallel View and Standard View displays the text.
So does clicking anywhere (except the bottom tab) in the Standard View pane.
I know the text is present (just invisible) because A) the scroll-bar is correctly positioned and B) the mouse cursor changes when I happen to be hovering over an invisible verse number vs. invisible text.
This happens on Ubuntu 11.10 with default window manager settings.