NotMyFault Posted January 15 Share Posted January 15 (edited) on MacOS, Photo has a rendering bug affecting probably all adjustment layers and filters nested to vector shapes. If you modify the alpha channel, the child escapes the parent rectangle (clipping / masking) and affects a random area (depending on zoom level). This is expected in principle, but the issue is that tendering becomes erratic and depending on zoom level. 1. Canvas rendering deviates from thumbnail rendering in navigator panel. 2. canvas limits are not respected. To reproduce: create new document, RGB/8 add rectangle, fill with horizontal linear gradient with black color, alpha from 0 to 100% add one of these, try both masking and clipping position channel mixer (alpha channel, offset = 100%) levels adjustments (alpha channel, set output black level to 80%) curves, drag left node from 0 to 0.8 in y-axis) Procedural texture filer, use A=1 as formula set adjustment / filter to increase alpha to 100% below one example. Edited January 16 by NotMyFault Reduced impact rating to „rendering issue“. Quote Mac mini M1 A2348 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
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