In the Database activity selecting to view a single entry from the list view ("More" icon) directs you always to the first entry. Clicking "Add comment" under any entry will direct you to the first entry. Comments can thus end up under the wrong entry. The ##comments## function if added to the template will also direct to the first entry even when clicked for another entry. This bug may affect more functions in the Database activity module that I have not tested yet.
I could find no reference to this in another bug report. I apologise if the issue is known already, or if it turns out to be local.