Allow a custom swatch palette to be the AI default without using "Legacy File>New"
Unless I've missed something, it is not possible to use a custom swatch palette as the AI default for all new documents without using the "Use Legacy File>New" feature. No matter what I tried, I couldn't get my custom palette to be the default. Using the standard (non-Legacy) new document feature, I always have to navigate down through the menu to choose my custom swatches, and then it only applies to that one new document. About 99% of what I do is spot color artwork for silkscreen printing, so the AI default CMYK swatch palette is useless to me.
Please get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html . Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.