Pairs are not mutually inverse, Invalid rates

[r4z0r5]

Version: 4.1.1
Config:
config.jsonc

curl localhost:port/get
{ "success": true, "date": y, "result": { "BTC/USD": 0.00010713, "ETH/USD": 3167.75, "USDT/USD": 1, "USDT/USDT": 1, "BTC/USDT": 0.00010713, "ETH/USDT": 3167.75, "USDT/BTC": 9334.45346775, "BTC/BTC": 1, "ETH/BTC": 29569214.97246336, "USDT/ETH": 0.00031568, "BTC/ETH": 3e-8, "ETH/ETH": 1 }, "last_updated": x, "version": "4.1.1" }

"BTC/USD": 0.00010713 - How it happened???

"BTC/ETH": 3e-8,
"ETH/BTC": 29569214.97246336
There BTC/ETH and ETH/BTC pairs should be mutually inverse.

Is it me doing something wrong?