Steps to reproduce: 1) Select a collapsed item by pressing 'n' 2) Mark it as read by pressing 'm' Actual result: The item's background turns grey, but it is not marked as read. The HTTP request to do so fails with a 500 Internal Server Error (response body is "invalid character 'e' in literal false (expecting 'a')").
This issue appears to be discussing a feature request or bug report related to the repository. Based on the content, it seems to be still under discussion. The issue was opened by dansanders and has received 0 comments.