I'd like to be able to see the scroll bar better - my mouse doesn't have a scroll wheel, so I have to drag the scroll bar. This is not easy when it is very narrow and disappears when not being moused over. My browser and PC settings both have scroll bars wider and always visible - most websites do not have an issue with it.

Edit: this seems to primarily be an issue in the Inboxes tab - the Contacts tab also has the (horizontal) scroll bar hide, but it only hides when the cursor is away from the contacts themselves, and I also never use that one. The Discover and Analytics tabs' scroll bars work the same as they do on other websites (wider and not hiding).