Camera shifts about a second into PLAY


If this post should be somewhere else, let me know!

So, this is not the first time i’ve had this problem. I’m doing a Paper 2d project with a static camera centered on the level. It’s worked fine
for weeks and now, suddenly, out of seemingly thin air;

About a second after i launch the game (in any mode) the camera shifts away (on the X axis) to the left in perspective mode, away from the XZ plane.
In the first second or so of launch, everything looks right.

I haven’t altered anything in the Level or Camera BPs, just been mucking about with the level layout.

Any ideas on what this might be?

Thanks, All!