Issue 918888 has been merged into this issue.

Tested the issue in Android and able to reproduce the issue. 

Steps Followed:
1. Launch Chrome.
2. Visit fantastyka.pl
3. Observed empty space instead of security icon

Chrome versions tested:
73.0.3660.2, 73.0.3659.0

OS:
Android 9.0

Android Devices:
Pixel 2 XL, Pixel XL

Using the per-revision bisect providing the bisect results,
Good Build - 73.0.3654.0
Bad Build - 73.0.3655.0

You are looking for a change made after 619164(GOOD), but before 619165(BAD).

CHANGELOG URL:
https://chromium.googlesource.com/chromium/src/+/30724e1c1da8a1a66bd5f105f6544a1382a83d19

@ender:  Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to owner concerned.

Thanks!

Thanks for filing this! This looks like something that could be triggered by my change.

I double checked the site. It looks like despite site using https protocol initially, is not considered secure by any other variant of Chrome. I also launched stable version of Chrome on desktop and my personal mobile devices, and padlock icon is not shown there, either (note, these version do not include any of my changes); I see on every single device that padlock appears briefly when connection is initiated and before site fully loads, and then disappears, which suggests something on the site is reducing security level (i'm guessing it's because of the plain http:// forms, embedded links and scripts).

if you think this is an error, we may have to address this at a higher level; by far every Chrome version (desktop, ios, android (stable and dev)) behave the same way, so I believe this is actually a problem with the site.

Feel free to reopen this if you believe this is indeed a bug. I'll check where to forward it to, then. Meanwhile - closing as "Working as Intended".

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PS. The fix for space at the beginning of URL has just been submitted. Just spotted you raised this as an issue, too.

Expected results - I was not sure (and explained it)

Bug status - it should be definitely not changed to Won't fix (it suggests, that bug was invalid which is wrong)

Could you also let us know CL link?

I will also clarify my previous comment - I was not sure, how partial https should be marked in these Canary builds (but showing free space was definitely wrong)

I assume, that url will be totally moved to left.

Please attach CL and we could close it as fixed.

Good point; I addressed the disappearing 'padlock', but not the empty space.

https://crrev.com/c/1393888