Enabling text-shadow disables default image rendering (via shouldDrawImages). It seems to be so because of:
branch around line #1002 of DTCoreTextLayoutFrame.m
I was unable to guess why shadows branch does not render images but it seems a trivial issue to resolve.
please provide a short HTML snippet to demonstrate the issue.
I modified two Demo files to demonstrate the issue:
Fixed problem where text attachments would not be drawn if shadow set.