I have two thoughts, one with 1 event and the other one with 5 events added. When I active the thought with 5 events I can visualize the 5 events OK, but when I active the thought with one event, it shows the 5 events of the previous thought and not the one event added to that particular thought. If I close the brain and open it again, I can see the event added OK.
To sum up, it seems that there is a problem of refreshing. This happens with different brains too (it is not a problem with a particular brain). I am using Win 8.1 x64.