Hello JakobSynth and welcome to these forums. You'll find many helpful people here and a lot of useful information. Make sure that you get the excellent User Guide too:
http://www.cockos.com/reaper/userguide.php
"Show MIDI track controls" has always shown the first pic.
To get the second, click on the FX button in the Track Control Panel (TCP). (I see you've moved to the v5 Default theme - some of the buttons have moved around a bit from v4)