Steps to reproduce the problem:
1. visit https page with self signed cert and proceed (unsafe)
https://146.148.34.229:8080/
2. visit http page on same ip (domain?) a number of times (you can hit refresh in the browser a few times)
http://146.148.34.229/
3. revisit the https page a number of times fast (continue to press command+r at a high speed simulating a page with a lot of resources)
https://146.148.34.229:8080/