You are free to have this leak but bear in mind, it's not mine, so don't bother me if the links/program/source/whatever stop working. I take no responsibility of this, use at your own risk.
If you're using a VPN its obviously in order to hide your identity online. Without certain extensions however your ip is likely being leaked even with a active VPN.
*Note* Content isnt meant to be used in place of VPN. In order to truly protect your IP you need VPN + content listed below.