I think I found a significant bug with Purchase Orders in QBO.  Can anyone replicate this?

1) Create Purchase Order with Vendor "ABC" using Non-Inventory Item for $1,000

2) Go to Bills and Select Vendor "ABC" - QBO automatically brings up the Open Purchase Order

3) Select the Open Purchase Order and QBO automatically loads the correct Item in the Bill and links the PO

4) Change the Amount in the Bill (partial fulfillment) to $750.  

5) QBO automatically closes the PO even though $250 remains outstanding on the PO.

6) I have tried every setting and change and this happens every time.

Please help! This seems like a MAJOR bug - can't believe the system just closes out Open PO's.