OK time to ask the experts for help 
(hopefully @steelgoose is reading). Below are two copies of the 2 wire push button (the non bendable one acts a little strange as it is configured still as bendable even though it isn't). As far as I can see the bendable version is the same as my 4 wire ammeter that works except for the fact the pb version doesn't work. This isn't the first time this has happened, but the last time when I copied the exact parts from the ammeter it worked, but its time to find out what I'm doing wrong. Both svgs have been run through my python script to remove the style commands (which bendable legs won't work with) but the normal one still works so that shouldn't be the problem.
pb_nonbendable.fzpz (6.6 KB)
(edit: replaced this with one with group breadboard defined which the original didn't have after I ungrouped everything, still broken though)
pb_bendable.fzpz (6.6 KB)
Any clues?
(edit:
Yep, turns out it cares about one of shape type: (rectangle to line, perhaps most likely) or fill (none to same color as the line) or perhaps both because making those 2 changes makes it work (its currently misaligned but I expect I can figure that out).
pb_bendable_fixed.fzpz (6.6 KB)
Peter