CQL: AttemptingFullContext conflict

I don't really know what this problem is about, but I received the following error: "AttemptingFullContext conflict in query. Please report this with a bug ticket.Ambiguity conflict in query. Please report this with a bug ticket.no viable alternative at input 'inserted after today'"

... after issuing the query: find record Projekttyp WHICH was inserted after today (in our knowledge base)

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