It appears that you need to commit all your edits in the grid before changing tabs. Here is a nice workaround that I found quite useful.
Turn out there is a question that was very similar to this one here on Stack Overflow. Here is a link to it. The accepted answer is the one that resolved the issue for me.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.