NotEvenTrying

Hi, I updated to Affinity Photo 1.9 a couple days ago, and have been loving the pattern layer feature as it is super useful for making repeating textures. However, I found today that smudge tool does not work correctly on pattern layers; instead of smudging the pixels, it erases them instead. I couldn't find anything on this online, so I assume it's a bug that has gone unnoticed. I can't really get much use out of pattern layers until this is fixed unfortunately, as I need to use smudge tool a fair bit in my workflow for creating stylized textures for games/rendering.