BNB Disappeared from account

Hello,

I'm being doing some "Convert Small Balance to BNB": https://i.imgur.com/S3WXZCx.png

However, every time I did that conversion, BNB started to disappear, now I have 0.000012 BNB after the last convertion. I don't use BNB for anything, I just buy/sell coin in the exchange.

Is there any fee that's costing BNB without telling? I read it happens before on this post: https://www.reddit.com/r/binance/comments/lqhpny/bnb_account_balance_missing/.

Thanks!

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UPDATE: https://www.binance.com/en/support/faq/115000583311 ; Check the article and deactivate the dashboard options to keep your BNB.