Keep Open Documents' scrollbar always on

Qt Creator's Open Documents view currently has the scrollbar turned on when needed. This means that the X button on the right that closes the document shifts its place depending on the scrollbar being on or off. This is inconvenient when you want to close multiple documents and the scrollbar happens to turn off during the process. (See attached gif.)

It would be nice if the scrollbar was always on in this view so the x button would stay in place at all times.

I don't think this is a big issue but it would be more convenient not having to keep the scrollbar in mind.