I have modified TSSOP package to have 14mil pads, and connected them via 14mil traces. This is because I am etching the board myself, for quick turnaround prototype in my company.
However… In the pcbnew and in the 3D viewer I see pads and traces correctly, as 14mil (no width difference between track and pad). But when I generate the PDF for printing, the pads are visibly thicker. This caused shorts in our non-perfect DIY etching.
Not sure if bug (or if known one). After some mocking around I noticed that SOME pads are the way they should be, while some are not. If needed I can disclose the files privately. Maybe I made a mistake somewhere, but it should still be a bug, because in pcbnew/3D it looks “correct”, while in PDF output it does not.
Due to limitations for new users, here is imgur album: https://imgur.com/a/2IGwD49