Level blueprint stopped calling events

I noticed lately that level blueprint stopped calling any map specific events, for example OnBeginOverlap etc. and also events from blueprints which are on
the map. Event tick and data flow preview doesn’t work too. I noticed that event begin play work though.
What’s more weird is that on new level, from same project, same game type, events are called normally.

Here is a video when I’m reproducing this issue:

I tried to save level with new name, but still no positive effect.
I think it start occur since transition to 4.4. Now I’m on 4.5.

Any help?