Warn before multi line paste options does not work

• iTerm2 version: 3.0.11 (in 3.0.10 there is no such issue)
• OS version: OS X 10.11.3

Detailed steps to reproduce the problem:

1. Paste multiline string with "Warn before multi line paste" option enabled.

What happened:

Option Edit->Paste special->Warn before multi line paste option does not work. In both cases (checked and unchecked) it does not warn when you paste multi line.

What should have happened:

When option enabled warning should be shown.