How many years do you need to fix that? the ticket was submited on 10th September 2014! In Dezember 2015 Telerik made a public item out of my "private" ticket. We are waiting now almost 2 years for this SMALL fix - a small fix in code, but a big issue for us! Please fix this as soon as possible... We are already looking around for other .NET components...
I just logged a similar issue with additional details and a sample project here: http://feedback.telerik.com/Project/108/Feedback/Details/191551-recurrence-rule-is-not-parsed-correctly