I just received a refurbished IPP and have noticed that that sometime about an inch wide strip of screen flickers severely when using apps and websites. For instance this website is fine in portrait view, but landscape has the strip of flickering on the left, where the up/down arrows appear. When using the eBay app, the flickering is random in portrait and landscape. Is this a result of these apps/sites not being optimised for 12.9? Could some one with a 12.9 try a few apps and sites in portrait and landscape to see if this strip of flickering occurs. It is faint, but a clear edge can be seen and it appears to be about an inch wide. Many thanks if able to assist.