[NTG-context] Broken PDF with latest MkIV

Hi, I just installed the latest ConTeXt MkIV (LuaTeX 2.06 20200706 + ConTeXt MkIV 2020.07.09 14:51) to check if the CG journal will look the same as with my "old” installation (LuaTeX 1.11 7215 + ConTeXt MkIV 2020.01.30 14:13). All looks well in Preview.app and PDF Studio 2019, but Adobe (Reader DC and Acrobat Pro 9) can’t open the new PDF. I’ll try to cook up a MWE. Does anyone else experience problems with Adobe apps? Hraban