v0.9.1 android analog stick input sticks when assigned as d-pad

[Rissos]

I've got an ipega controller. It is working wonderfull together with ppsspp, however when an analog stick is assigned to be a d-pad using controll mapping, it sometimes sticks with a certain input. For example, when I assign the right analog stick to the d-pad, when I press left on the analog, often ppsspp keeps inputting "left d-pad press" although I already have let go of the stick.

When I assign the right analog stick to be the analog of the psp it doesnt have this problem. Is there any solution or is this already a known problem?