Possible regression in reference-image-based image edit/regenerate behavior since around Mar 12, 4:00 PM JST

Additional observation from separate testing: This additional test was performed using text-to-image generation, not image-to-image editing. In these separate tests, I observed that portrait-oriented outputs consistently resolved to 1024×1536, while landscape-oriented outputs consistently resolved to 1536×1024. At this stage, I cannot state this as a confirmed system-wide rule, because testing is still limited. However, across 4 additional tests of this type, together with the earlier 20+ edit / regenerate tests, all observed outcomes so far appear to collapse into one of these two final canvas sizes. Because of that, one possible interpretation is that the current output path may be forcing results into a fixed portrait or landscape canvas format, rather than preserving the original source dimensions during reference-image-based edit / regenerate requests. I cannot verify the internal cause from the outside, but this behavior may be related to the current failures in preserving the original frame and canvas.