Traveller keep/exchange interface has overlapping buttons in large window sizes

[blueblimp]

Screenshot attached. This doesn't seem to be an issue if I resize the window to be smaller.

[blueblimp]

Also, another thing about that screenshot is that I think it would be better to just enlarge the window when there are multiple travellers instead of having a teeny-tiny window with a scrollbar. (There's plenty of screen space available.)