Clips move off centre with some titles (fxfactory plugins)

Hi all,

I am not a super user in FCP. However, I have been using the platform for some time. Recently I have noticed that on some occasions, especially when using a plugin with titles, the clip seems to jump off centre when it transitions from one title to the next.

In this case, I used a plugin from Ripple (FXFactory) called Title Mation and the effect is called 'Block Down' -

In the timeline, I have a video file with the 'block down' and then text coming in. The text and block fade out with another coming in overlapping a bit. Now, it seems the moment it overlaps the video clip moves off centre.

I hope someone understands what I am trying to get across. I thought of contacting the plugin support guys, but it happened with other plugins again (different creator).

Sometimes, the only fix is to remove the layer (plugin) and then add it again.

1. Does anyone know what I am doing wrong?
2. Is this a plugin or FCP error?

Any advice would do.