Another thing you can try is to add the elements you need to click on manually to the Element Explorer and then create a click step from Step Suggestions for them again with simulate real click property set to True.
Here is another video that demonstrates the entire process.
If the issue persists please:
1. Provide us with a copy of your test and access to your application so we can reproduce the issue on our end and give you a solution.
2. Alternatively you can take a Fiddler trace using FiddlerCap and send it to us in a zip file. Basically with that trace I'll try to "simulate" your app in order to reproduce the issue.
Hope to hear from you soon.
the Telerik team