Camera shifts unexpectedly on X axis after about a second into launch


If this post should be somewhere else, let me know! I am guessing its about a camera or level blueprint in the end.

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 (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!