I found that Kontakt 7.6.1 changed my default view by removing the browser on the left.
Since have never played around with this, I had to consult the manual first in order to get that back. IMO an update should not apply such changes.
Same thing happened here, I had to hit the double boxes to bring it back to normal.
whoops wrong thread
you can downgrade to the previous version of Kontakt 7 (7.6.0) via the following link:
mac:
Kontakt_7_760_Mac.dmg
https://drive.google.com/file/d/1vYrco-bfZXK18VWVoEoWLS6HZBd2-oPH/view?usp=drive_link
Win:
Kontakt_7_760_PC.zip
https://drive.google.com/file/d/1GjQtdHYtc-jElijJQOYRkT-eri9NZskH/view?usp=drive_link
Ref. : https://community.native-instruments.com/discussion/17691/kontakt-7-6-1-update-causes-cpu-spikes-crashes