The “fit string” property is not working at all when the resource is a third-party font, even if it’s a truetype font file (which is specified in the developers manual). It works perfectly with the Halion fonts and with the stock system fonts but not with any third-party loaded font. Here’s a link to a gif showing exactly how to produce the bug. Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.
the problem described above is fixed already in my internal build, is listed as Bug-ID “HALLY-6996” in our Defect-Tracking-System and will be published with the next maintenance version.
Thanks for your report and please accept my apologies for any inconvenience caused.