TortoiseGit->Show log->revision view below->cannot paste to "Filter paths"

What steps will reproduce the problem?

1. Like in subj, I go to the log window to review a specific revision
2. I copy-paste the filename I'm interested in to "Filter paths" field.

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

The filename should appear there, but nothing happens, the field is empty (or contains the same text as before in case some text has already been there)

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

TortoiseGit 1.8.16.0 git version 1.9.5.msysgit.0 Win7