OK.
If you put any other control on the scrollbox, probably it will work OK.
If your point is: yes, go ahead and make Lazarus a geat IDE, I am with you. If your point is: no, Lazarus is a bad IDE, don't use it, I'm not wih you.
There are people who give up on the first problem and don't wanna make efforts. And there are people who like to find problems, because this is a way of help. If you are a user who would like to make applications with Lazarus, I would like you to know that this forum is a good way to find help.
By the way, what Lazarus Project has to offer is not simply a IDE, it's a innovative organization style where users can be also developers. They can bring original and important contributions. Be you too a contributor to the project.