I have followed the steps exactly as outlined and cannot reproduce the crash you are experiencing. Does this crash happen every time you test it?
If possible, please provide a video of the crash occurring. Also, if you have not yet, try updating the editor to 4.18.1 and see if the crash is still occurring for you.
Thanks for the video, I was able to reproduce this in 4.18.1.
I went ahead and tested the same thing in our latest internal build and no crash occurred, so this appears to be fixed there. Please test this when the next version of Unreal Engine releases and let us know if you still have issues.