@Morkl
Someone should correct me if I'm wrong, but to the best of my knowledge the ADE reading app doesn't support the @font-face
font-variant:small-caps option.
This may be because the current epub standard doesn't include support either. That being the case, I'm not sure it's fixable other than by removing the small-caps items as you've done.
Just so I fully understand, I need to root my T1 to do this and your mod becomes a second reading app?
Suppose I decided I will never use any of the 3 sans-serif fonts (Frutiger, Univers, Verdana). Might it be possible to create a modified apk which substitutes the @font-faces of 3 of my own font choices pointing to external fonts stored in /fonts in internal memory by using
url(res:///ebook/fonts/../../mnt/sdcard/fonts/
mycustom.otf).
Then I would be able to access my custom fonts via the Frutiger, Univers, Verdana standard options. Or am I being over-hopeful
Well done to you for tracking down the problem.