Clicking on the Loop on trains to find. Should open the menu for the train.

So when you open train manager and click on the loop for a train, you gotta pause the game else train is going on and the train manager window is on top.
It should open the train menu, so we can look/take actions on it without having to close a screen, click on the train to see it.

this should apply to every "jump to" features, like in import/export routes and mine tower vehicles.
(herhaps add a keybind?)