It started when I activated user tasks. I set up a couple of test tasks to myself (admin), in order to finish the incomplete translation.
When I wanted to accept one of the tasks I gave myself, I unexpectedly ran into an error that was erroneus... The error claimed that tasks need to have a title of at least three characters. But it had a title of four characters. Below the error message was an edit dialog, where the title was completely blank.
I then entered a new title and saved - and now the entirety of all tasks (they were three) are gone.
And what's worse: I cannot create new tasks anymore! I get the dialog and can enter all the stuff, but when I save, the UI insists that there are no tasks. I also checked that I include tasks that were done or deleted (had both), but still "no tasks".
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