Más de lo mismo.

A French user who asked Oppo USA about PAL 50Hz problem with his Oppo , received this answer from Oppo Digital
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We did some testing this morning and found that the PAL polarity falls just outside of standard PAL when doing 576p/720p/1080i. This is normally not an issue, because most display devices have large enough ranges in horizontal scan rate to compensate for the problem. However, as noted with your display unit, a Sony LCD, and a BenQ PE8700+, not all display types have enough range to compensate for our lacking performance. For such displays, oddities such as imporper display (shifting to the right) or non-existent image are common.
We are working on a proper PAL fix for a future firmware revision. In
the meantime, you will have to use NTSC upscaling.
Best Regards,
Customer Service
OPPO Digital, Inc.
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Un saludo