also try to create the fonts "bchr8r-20-100" and "bchr8r+20-100" To close this out here, and for anyone curious, I posted my analysis of this bug and a possible patch to pdftex on ntg-pdftex. (Robert, I cc'd you with it.) https://mailman.ntg.nl/pipermail/ntg-pdftex/2020-March/004307.html --thanks, karl.