Error in placement of combining diacriticals
I use combining diacriticals from font Cambria Math, specifically U+031F and U+0320. These have rendered properly in previous versions of Acrobat. The current version improperly places some, but not all, of the combining diacriticals. This error in placement affects both screen display and print from the PDF. Windows 10 Pro 64 bit.
I am attaching two 1-page PDFs exported from my page layout application. One preserves the glyph codes, the other was set to "rasterize everything". Direct your attention to the last paragraph, following "rectangle of interest". The rasterized output properly places all four combining diacritical glyphs, while the normal output improperly places the diacritical w.r.t the 'f'. This error is repeated on the next line of text.
I have examined the Unicode sequence in the page layout application, and the combining diacriticals properly follow the letters they are to combine with. I do not have access to the PDF internal format to confirm how they were exported.