<specific> tag no longer works

[Zbizu]

description

There used to be a feature that was blending several different grounds when their borders aligned for that.
It used to work in RME 2.1, but doesn't seem to work in 3.x at all

affected brushes

• water + sand + other ground
• earth + earth (thick border)

I solved the first problem that was "specific" cases not being added to the border block, but I still run into those weird borders:

In current state, I'd have to write 56 cases in XML file for it to blend perfectly (16 for straight edges and 40 for corners). I tried to treat these as same border, but when I do this, the <specific> tag doesn't trigger either because the borders don't overlap.

Did anyone manage to restore RME 2.1 autoborder behaviour?