ALOS-2 UBS Level 1.1 bug reading pixel data


I encounter a strange problem with a specific ALOS-2 PALSAR mode.
I have several UBS images where it seems like it’s misinterpreting the pixel data in the middle of the image.
There is nothing wrong with the product itself because I can memory map the image data file in Python which gives me the image on the right.
The one on the right agrees well with the quicklook provided with the product.
The bug seems to be specific to this mode because I have several FBD products as part of the same order and they display correctly as far as I can tell.