"Session Target" calculation doesn't update automatically

Hello, I use ver.3.0.1, on Windows 10.

I had set Draft Target Characters, and set “Deadline” and check on “Automatically calculate from draft deadline”. I love this feature.
Then, I wrote some words in draft, open “Project Targets”. But “Session Target” is not update automatically.(pic 1)
Click “Options…” button, and close the window shortly, “Session Target” shows updated characters. (pic 2)
All I did was clicking a “Options…” button.
I want the values in “Project Target” window are update automatically, because “Target Progress Bar” in Quick Search toolbar looks so. Thank you.