When saving a preset with Custom Resolution, neither Width, Height or Scale (%) values are saved. Upon importing a video and selecting the preset, values for Custom Resolution are all zero. I expect the preset to keep these settings.
Running 3.5.3 and it’s been present in 3.5.2 at least because that’s when I started using Custom Resolution (fixed Height at 1440 with Original Pixel Type and Frame Rate plus Lock Aspect Ratio)