There are a lot of scenarios like this, I generally dock quickly but if there is some delay (ie if I make a mistake & fail to send the docking request, causing me to delay my entry into the station) I will often find some harmless NPC Hauler I have to avoid hitting. In an outpost instance if I delay requesting docking in a medium ship it will usually be denied because an NPC beat me to it.
If I enter an existing instance the challenge that instance presents is different because all actors are already in place.
The solution of course is for the game to make the player wait a little longer (eg with a glide transition rather than instantly entering the fresh instance), which quite understandably would not be a popular solution in a thread about wanting to reduce travel times