Warning: TT: undefined function: 32 - font loading issue?

[kangelSL]

Hi,

I did a check if this has been asked before and couldn't find anything, so hope it's OK to ask here.

The library is working well for me and rendering as I would expect, but when I open the PDF I'm receiving a warning log:

Warning: TT: undefined function: 32

I can see the pdf.worker script is generating this, but not why or where. Searching around elsewhere it appears this error is related to fonts.

I'm using an inherited script with the following properties:

const D = Object.freeze({
              maxImageSize: -1,
              disableFontFace: !1,
              ignoreErrors: !1,
              isEvalSupported: !0,
              isOffscreenCanvasSupported: !1,
              canvasMaxAreaInBytes: -1,
              fontExtraProperties: !1,
              useSystemFonts: !0,
              cMapUrl: null,
              standardFontDataUrl: null,
            })

Ideally I would like to stop this log happening / understanding why it's giving a warning rather than just suppress the log. Can anyone advise?