bwmorph 'skel' problem ... bug?

[rogerdboyle]

Hi - I am finding 
    bwmorph(BW,'skel',Inf)
breaks objects apart when it shouldn't.

A minimal example follows: bwmorph(BW,'skel',3) breaks this object on row 5:
but bwmorph(BW,'skel',2) will not.
This is fouling me up a lot!
Any ideas?  Have I been stupid?

Roger

BW = [
   0   1   1   1   1   1
   0   1   1   1   1   1
   0   1   1   1   1   1
   1   1   1   1   1   1
   1   1   1   1   1   1
   1   1   1   1   1   1
   1   1   1   1   1   0
   1   1   1   1   1   0
   1   1   1   1   1   0
];



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