When eroding, the deposits are not evenly treated across the whole map. The amount of deposits shrink at the edges. Presumably this is because as you get towards the edge there is less to deposit due to the void around the map. Odd edge behaviours isn't an issue that comes up all the time but it's often enough that it requires workarounds. Here is an image of the issue .
In the image you can see the deposites are agreeably uneven but they fall away at the edges, this behaviour is consistent.
The only robust workaround I've found is to mess about transforming, mirroring and reblending landscapes which is a signifcant overhead.
Has anyone discovered an efficient or quick work around for this?