Connecting PiGlow stops RPi to boot

Hi there!

I got a PiGlow module to experiment with, but I’m having some issues. Every time I try to boot my Raspberry Pi after plugging in the module, it doesn’t turn on, and both status leds just stay off like there is no power (tried with Pi 2 and B+, same result). I tried multiple power sources with no success.

After removing the module, everything works ok. Also did some GPIO pins testing, they seem ok.
Any ideas what the issue could be? Any other tests I can try?