Tearing graphics (looks like some odd polygon clipping error)

Solar2D Advanced Graphics
#1

When I zoom in to an image (and it should be noted I’m scaling etc using .path, not xScale or yScale), then I see the following graphical glitch on my ipad 2 (but not in the simulator):

Note the tear in the graphics at the top of the nearest billboard above the road, a diagonal line from top left going right and a bit down.

The following 2 images are just to highlight it again, and how it isn’t a fixed angle (or I’d have just assumed it was a mistake from the 2 opposite corners of the image itself). Tearing is just above the blue line:

#2

I was about to post another visual bug, but realised it was almost certainly exactly the same bug.

Basically if I am in the ipad in a position in my game similar to the first pic above, and I move left and right - in theory the only thing happening to the billboard is that it slides left and right. However, the image starts to move up and down several pixels in a random jittery way (walter - if you build my source code for ipad you can see it clearly there - or I can add you to testflight if that helps).

#3

I was about to post another visual bug, but realised it was almost certainly exactly the same bug.

Basically if I am in the ipad in a position in my game similar to the first pic above, and I move left and right - in theory the only thing happening to the billboard is that it slides left and right. However, the image starts to move up and down several pixels in a random jittery way (walter - if you build my source code for ipad you can see it clearly there - or I can add you to testflight if that helps).