Ok, I've got a repro now (55.0.2883.87 linux):

* Visit a secure site. https://www.yahoo.com
* Press CTRL-K. For me, this puts focus in the omnibox and says "Search Google |"
* Hi BACKSPACE.  Now it says "Secure |" and you can type and it'll remain

If I start on an HTTP page, it does not say secure.

Huh, I can't repro on 56 stable.

nparker, does that repro work consistently for you? Would you be able to try on 56 or later? I wonder if it got fixed already in 56.

(Actually, nparker, I'm going to try bisecting this, so don't worry about it if it's not easy for you to test on >=56 right now.)

I can't repro on 57.0.2987.13 (linux/dev).

Yeah I think this was fixed somewhere in M56 (I could reproduce on a 55.0.2883.87 build but can't on 56.0.2924.76), but my attempts to bisect ended in nonsense.

Bumping this over to spqchan@ in case she knows what might have fixed this and if there's a test for it.

I'll try to bisect again in the meantime.

Oh, my previous bisect ended in nonsense because I got confused about what was "good" and "bad".

Looks like this was fixed, perhaps unintentionally, in https://chromiumcodereview.appspot.com/2435493003.

spqchan, could you please take a look and see if there's anything we need to do to make sure this doesn't regress? (e.g. add a unit test or structure the code to be more deliberate about this case or...?)

Sure thing! I'm planning to write tests for the security verbose on Mac ( Issue 687347 ). I can write them for Linux/Windows too