This is normal. If you look at the PCIe pinout specification you'll notice that any PCIe card will have at least two sensing pins (PRSNT1# and PRSNT2#)http://en.wikipedia.org/wiki/PCIe#Pinout
The #1 sensing pin indicates that the card is inserted. Thus, it is shortened to ensure that all other electrical power contacts are inserted first before the card is allowed to draw power from the slot. This reduces the possibility of damage in the event that the PCIe card is hot-swapped while the machine is on.
The same is true for at least one of the #2 sensing pins which detect the largest possible lane width. Each card will have up to 4 #2 sensing pins corresponding to 1x, 4x, 8x, and 16x lane width. The largest sensing pin will usually be shortened as well.