End marker keeps moving back

Every time I open the session of a specific project, the end point is moved further out from where I had previously set it. I’m not adding anything past the end point. What are the possible reasons this could happen?

version of ardour? where you got ardour from? platform?

Seems OK now. Just opened the session, and the end marker was in the correct place. It must have been pushed while I was making final edits, even if I didn’t move anything past the actual end of the song. Thanks, though.