guard-spin breaks rspec output

[siassaj]

You will notice that I'm using Fuubar, however the result is the same with regular rspec output. The images explain it better than I can

Rspec by itself, correct output
http://oi46.tinypic.com/358xx0z.jpg

Guard with guard-rspec, correct output
http://oi47.tinypic.com/30w330k.jpg

Guard with guard-spin, notice the weird output
http://oi49.tinypic.com/34fbmzm.jpg

Guard with guard-spin, no Fuubar, again weird output, only 2 green dots for 5 tests, no new line before the dots.
http://oi45.tinypic.com/302orh0.jpg

All output is formatted correctly when I don't use guard-spin.

Guardfile.rb

guard 'spin', test_unit: false do 
  ...
end

.rspec

--format Fuubar --color

Any Ideas?