Alpha texture went wrong!?

It went horribly wrong and horrible since the new Update!!! I'm wondering if LL have noticed of this or not? And when will be new update patch be? And couldn't I use 1.10.1 instead for now??

I use a box with <0,1> taper to look like triangle. My texture has alpha it in and only half of the texture is displayed on the prim. But now in 1.10.1, it went wrong in the most horrible way!

The whole texture suddenly applyed to the Triangle without my command! And the worse, When I move camera around it seem to flicking back and forth between 1.10.1 look and the new wrong look! Do i have to say how horrible that make my whole building look now???

Anyone else seen this?

I want 1.10.1 back now!!!! I can't stand seeing at the stuff anymore!

Moved to Current Version Feature Feedback.

Nargus, sounds like a bug--did you already sent in a bug report on this once you've locked down the steps needed to do it over and over? I haven't personally encountered this, but we'll definitely want to check it out.

Please also post pictures as appropriate.

I'll be looking out for other instances of this.

Yes I did. And I do not sure how reproducable it is. However, anyone can see it in action (i mean the bug) at my Pumacity (211, 170). The object in question is the glassy dome covering the place. The dome 'was' pure glass, with grey border. But now, from the BUG, there are black-section covering the prim, which is WRONG! The black section belonged to part of texture that shouldn't be seen. If you move camera around for a bit, you can see the texture switch back and forth between new wrong behavior and the old one.

The prim is a box tapered (x=0,y=1), with general texture mapping.