A pdf e-book downloaded from Google Play does not display the table of contents, and the full-text search function does not work, when viewed on Adobe Digital Editions version 2.067275. However, when the original pdf I submitted to Google Play (I am a publisher) is viewed on ADE, the table of contents does display and the search function works. This suggests that something in Google Play's processing of the pdf disabled the search function and stripped the bookmarks, which are the basis of the table of contents. These problems do not occur in Google Play's preview copy of the ebook which is available to all.
The Google Book Team has been unable to resolve or explain the issue, and has suggested the fault may lie with ADE, perhaps with the settings. I am sceptical about this, but would appreciate advice from others who may have experienced these defects.