Closing price on open option position is not current

I've noticed for some time that the price shown on my account (fidelity.com) for open option positions after market close is inaccurate.

For example, today the NIO230120C35 (CALL (NIO) JAN 20 23 $35) option closed at $25.48 - but the price showing on my account 'Open Positions' page (after market close) is $24.60. Why? Very disturbing to see incorrect numbers on my account!

I've observed also that the incorrect price is corrected sometime overnight before the next day's market opening.

Anyone else noticed this?

Is there an explanation?

Is there a "fix"?