Finish-to-Finish Dependency pushing finish date out past its predecessor

edited 12/09/19 in Smartsheet Basics

I'm trying to create a finish-to-finish dependency between two rows in a sheet so that the two rows share a finish date. However, when I add this dependency in, the finish date of the dependent task is pushing out months past the finish date of the predecessor.

Has anyone else seen this behavior? Is there something I'm missing?

Dependency miscalculated.jpg