Hello, hm, yesterday I updated from git and restarted Emacs. This morning I opened and closed a handful of recurring tasks, then I discovered that all of them showed the issue. I removed today's logbook entries, saved the org file, reloaded the agenda and opened and closed the tasks (from the agenda view) again - this time everything is correct. Of course, I did not necessarily repeat exactly the same steps in the same order and timing.
A couple of weeks ago I asked about data loss. Nobody else seems to have the same issue. Maybe the two are somehow related and they are a result of how I use Org? I would say that I haven't customised too much and I use Org in a very basic manner. So if you think you have something to add, even remotely, please chime in ;). Regards hmw PS: One thing both issues have in common is that they occur before noon, in the hours after awaking the machine from suspending to ram during the night. But that could be pure chance, because I tend to manipulate most of my tasks before noon.