Loyalty points calculation bug in v1.4.4.1?

[keypieces]

Hi, does anyone know if there's a bug in the loyalty points module for v.1.4.4.1, or perhaps I've done something wrong?

 

I have configured loyalty points as below:

£10 = 1 point

1 point = £0.30.

 

After doing a test purchase I have 9 points registered in my customer account - no problem there.

 

However, if I then do a customer refund of that purchase I end up with 11 points being deducted, therefore leaving me with -2 points in my customer account.

 

I tried another purchase and the same thing happened.

 

Can anybody help?