modifications window doesn't refresh after commit

What steps will reproduce the problem?

1. open "check for modifications" window
2. commit changes via its "commit" button

What is the expected output? What do you see instead?

i would expect the modifications window to no longer list the changes i have committed, but the window is unchanged.

What version of TortoiseGit and Git are you using? On what operating system?

tortoisegit 1.8.16 git 2.6.1.windows.1 win7pro win8pro

Please provide any additional information below.

tortoisegit is a fantastic product