When a user presses a button i add a scale transform to make it zoom out like safari’s tabbing. when user presses the webview it comes back up. When the view is rotated, i use to get the values of how i wanted the frame to look like in tab mode, and checked if it was in tab mode when rotating and applied the frame. it works, and ive tried taking it out. The issue is, if i rotate like 10 times, a black line on the right side gets bigger and bigger going inside the webview. i have logged tons of objects for the web view and its scrollview to see if anything is off, the scrollinset/offset is correct, the frame is correct, the transform is correct too. i cant figure out why theres the black line. i tried refreshing the webview to see if its the webpage, and it doesnt fix that ether,the scale transform values is
CGAffineTransformMakeScale(0.6, 0.68)
for zoom out, and 1, 1 for zoom in. if anyone wants to see the effect just apply that to a uiwebview and start rotating the device about 10 times and you would then really see it.
heres how the web view looks when rotating a bunch of times: 
on the right side theres that thick black line, it gets bigger with every rotate but ONLY grows when that transform is added, if its normal size again it stops but stays there.
When you transform any view, their frames do change, If you are using autoresize flag, check it since transforming changes frames and autoresizing also changes frames and this creates weird result.