TSOP-5 should have pin numbers 1...5 as in the datasheet.
The datasheet lists pins with numbers 1...5 https://www.vishay.com/docs/71200/71200.pdf. The footprint had 1..4+6
Reported on the forum: https://forum.kicad.info/t/sot-23-5-6th-pad-in-v5rc/10443/6
Edit:
This footprint is not used as the default footprint for any of our symbols.
This is a fix for #508 (closed)