This has already been reported in
but I wish to confirm that report and state that I am getting the same problem. As the previous thread stated, this will happen if you just follow through the first two programming tutorials (i.e. Getting Started and the property variables tut.). This is completely reproducible (just follow the tutorial) and is happening across several of my projects. This is a real nuisance, because the only work-around seems to be to delete the broken instance and create another one (therefore losing all your settings).
Is anything being done about this?
I am running the latest UE4 version (4.7.6) as of this moment (downloaded earlier).