yes, of course, I will create a real icon based on the internal default image and then snapshot its position. Btw, this works already without problems on WB v44+, but it seems I made a mistake somewhere in the v39 / v40 support code.
Thanks for adding the ENVARC:sys/def_disk.info file as a workaround for now. Unfortunately, your link above to page 39 can be a bit confusing. Better would be a link to the postcount 776.