Scripts cannot read Ignore Color setting from presets
With the appearance of the Ignore Color checkbox, scripts have another big problem besides ignoreWhite.
If a user creates a custom preset with Ignore Color enabled and selects a color, and then tries to automate the use of this preset from a script, the scripts cannot load the data about the Ignore Color checkbox from the preset.
In the mentioned beta version 30.4.0.80, this issue still persists (so it should also be in the GA 30.3)
Example:
(function (){
var image = app.selection[0].trace();
var preset = app.tracingPresetsList[19]; // User index of custom preset
image.tracing.tracingOptions.loadFromPreset(preset);
app.redraw();
image.tracing.expandTracing().selected = true;
})();