Do other EInk readers show the title of ePub ebooks?
The ePub format does not make it easy to find the title. You have to extract the OPF file from the zipped ePub and then find the title within the OPF. Calibre can extract metadata from many ebook formats, see
ebook-meta, but it is written in python which isn't installed on most EInk devices.
In the case of ePub (and PDF) I think ADE's SDK should include a tool for extracting the title from an ebook. It would then to up to Jinke (say) to use the tool for ebook listings.