All, I can confirm exactly what all the others are reporting, excluding @Rustyben. Mid to late March is when it switched for me on all of my Xfinity devices, both the main X1 DVR and the mini boxes on the other TVs. All Star Trek (TNG, DS9, Voyager) series that previously displayed properly in 4:3 format with black bars on my sides of my 16:9 TV are now stretched to fill the full 16:9 screen so all charecters are short and fat. Sorry to dumb it down. Dozens of other devices that can also access NetFlix do not have this issue, the issue is only with Xfinity X1. I have tried other old shows that should also play in 4:3 format and they are stretched as well. When I contacted Xfinity support in March they blamed NetFlix.
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