Im not sure you are still here, but yes I’m having a terrible time with WC, for very similar reasons it sounds. I didn’t used to have any issues whatever, so I’m not sure what is causing it, I have zero overlapp inthe 3d viewport, yet in wc window TERRIBLE overlap in two places…its combing two of my terrains as if there are 2,weirdest thing I’ve ever seen, where usually UE4 is solid.
I’m told its because I didn’t use the ‘recommended size’ for a terrain of say, 4033, instead I used 5101, not to be different or buck wisdom but because, at the time, the data Iwas getting from this .jp srtm 30m source was 5101, so I kinda had no choice.
You said you can drag yours into the ‘right’ position, meaning as for me also, that doing so still shows overlap ? If so , sadly, yes, its very frustrating, wondering if I continue , I’ll start to have issues in the 3d viewport next.
I’ve also seen in wc window, this ‘small’ terrain which eventually went away, I think for me I had one terrain ‘hidden’, which I caught and I think if I recall right that fixed that one. I wish we knew whats causing this, may be in part or in whole, that the coding for this feature is not a top of the list requirement for the team if not that many people are using it-just guessing maybe the dev team can elaborate,- or if its us, but I can’t imagine what.
Can a dev for ue4 speak to this, are we both in danger of our projects biting the dust or is this simply a visual anomaly ?