Pre-order: Sony FE 50mm f/1.2 GM ($1,998)
There are very strong PDAF stripes in this image at timestamp 2:29 in Julia Trotti review https://youtu.be/_XAzD0dpkW8?t=149
Some lenses are more prone to produce it with A7iii, for example 85/1.8G produces it more than others. At least that is mentioned here: https://www.dpreview.com/news/6974141509/sony-striping-heres-the-fix
So it looks like 50GM can produce it in backlit situations too.
Edit: Also visible with other pictures, but not as strong as the one above
at 3:23, 5:10, with A7C: 10:07 (weak in hair)
Some lenses are more prone to produce it with A7iii, for example 85/1.8G produces it more than others. At least that is mentioned here: https://www.dpreview.com/news/6974141509/sony-striping-heres-the-fix
So it looks like 50GM can produce it in backlit situations too.
Edit: Also visible with other pictures, but not as strong as the one above
at 3:23, 5:10, with A7C: 10:07 (weak in hair)