Possibly due to the weird interest rates in the last 10 years? I think T-Bond pricing will vary based on interest rates, like if the interest rate has declined

Possibly due to the weird interest rates in the last 10 years? I think T-Bond pricing will vary based on interest rates, like if the interest rate has declined since you bought your bond it will be worth more iirc, so the weird interest rates market recently could have an outsized effect here?