The site https://www.iplocation.net/find-ip-address (What is my IP?) reports an IP address, and two proxy addresses. One of the two proxy addresses is the same from TorBrowser or from Firefox (non-tor). I tried this with two different VPNs, and from different VPN servers. I haven't tried this without a VPN, as I only connect to Tor when using a VPN. This doesn't seem okay. I searched that IP address with Google, and I don't see any report of this, which I would expect if they showed that IP address as a proxy for everyone.
DO NOT USE A VPN WITH TOR
This has been documented to be a very bad idea. The VPN will track everything you do, and destroy your anonymity.
Just connect directly to Tor, and if needed to access Tor, use bridges