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

Hello, I would like to report a possible regression in reference-image-based image editing / regeneration behavior. Based on repeated tests on my side, I observed a clear change starting around March 12, approximately 4:00 PM JST. Since that time, when I provide a reference image and request either: - an image edit / correction, or - a localized regeneration / partial fix, the output no longer preserves the original image boundaries and consistently introduces issues such as: - cropping / trimming, - framing changes, - canvas size changes, - modification of non-target areas. This happens even when the request explicitly and strictly prohibits any canvas size change, cropping, trimming, reframing, or composition change, and asks for a minimal local correction only. Observed results from recent testing: - more than 20 attempts - cropping / trimming occurred in all attempts - 0 attempts preserved the original frame - 0 successful correction results The issue is still ongoing at the time of writing. The main concern is not only output quality, but failure of basic reference-image preservation behavior: - the original canvas is not preserved reliably - framing changes occur without being requested - non-target areas are modified during edit / regenerate requests From my testing, this appears to be a regression in the reliability of reference-image-based editing. Please investigate whether there was any backend change, model update, routing change, or editing pipeline change around that period. If necessary, I can provide additional examples of the failure pattern. Thank you.