Hi,
Sorry - found another problem with 6.0.0 that wasn't there in 5.x.
Basically, if you delete an edge rats-nested filled polygon, then the polygon doesn't visually update like it did in 5.11.0. Undo also suffers from problems too.
Video is available from http://www.youtube.com/watch?v=dPD-Kevo7Zw
Example 5.11.0 format file from http://www.tribbeck.com/misc/PolyRemove.brd.zip
