Yes there is a screw, no idea why it is there, maybe there was a plan to reinforce it through the receiver into this area?
I am not gonna mess with drilling into the receiver, TI mentioned that the manufacturer is working on a solution.
And I agree with you on the top screw some did here. I don't want to see a screw through the gap between the receiver and the wood, I also don't like the way gnnutz on youtube did it, I have no plan to touch any of the original parts, in his case grinding off a part of the safety lever. I am very well capable of fixing it, even if it should crack but this is a new rifle I bought and I am not gonna mess with it.