how did I get an indent on the first line of each even numbered p.

[zi]

I am using a template to format a document. When I apply the template, I get
a small indent in the first line of text on every even numbered page. When
this coincides with a paragraph break the indent is bigger. It does not
happen on the odd numbered pages. I did not intend this and I want to make it
go away.
The page set up has mirror margins, text is left justified, no tabs spaces
or other symbols appear before the word that follows the indent when hidden
text is shown.