Is this just a display bug, a TRON energy/bandwidth calculation issue, or normal Trust Wallet behavior?
I don't know the cause of such an error, but you know I have encountered similar things in the past when I was still actively using Trust Wallet; their fees were most times higher than usual.
Maybe you should update your Trustwallet or use Tronlink app, it's more better for Tron ecosystem.
TronLink or any other Tron wallet should be fine. I don't recommend updating Trust Wallet for that purpose.
In between: Tron Chain token transfers appear to be on the high side recently; if you are sending TRX to another wallet, the fee is within 1 TRX to 1.2 TRX, within the range of $0.35+, but for tokens like USDT, you spend as high as $1.50 to $3 in fees.