Hi there. Nobody has problems with the latest nightly build (#1023)? I won't start on my inkbook obsidian (a boyue t63 variant). I verified the same problem occurs on my mobile, so that's rather not inkbook/boyue specific problem. The previous build (#894) is working fine on both.
BTW, I only recently discovered this android version working on my inkbook. Maybe not the best choice for epubs, because they open rather slow and I don't seem to be able to change the font without dropping embedded styles altogether. But Koreader's pdf support is really outstanding, better than anything I saw on inkbook, or pocketbook for that matter. So many thanks to the devs