Currently if the length of a playlist is longer than an hour, Traktor displays it as hours with decimals (e.g. 1.1 hours).
As someone who regularly compiles and records radio shows in Traktor, that have to be a certain length this is quite annoying because with one decimal place it's quite inaccurate and also unintuitive.
i suggest either a toggle through different modes when you click on the time or just to have it in hours:minutes(:seconds) permanently.