If a paragraph has a negative indent for the first line,
and the first (only) tab is at zero,
and there is a tab in first line of data,
and the document has just been loaded,
the tab does not go where it should (to the main left-margin point).

Load the attached document.  Note how the verse reads:

Name. This is the first line.
          This is the second line.
          This is the third line.

Now, right-click on one of those verse paragraphs.
Pick "Edit Paragraph Style".
Pick the Tab tab of the dialog box.
Don't actually change anything.  Just hit "OK".

Now all the verse reads, correctly:

Name.     This is the first line.
          This is the second line.
          This is the third line.

You can save the document now, if you like.  But when you load it again, the
tabs will be screwed up until you do the above bypass again.

Spooky, huh?