UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3386.1 Safari/537.36

Steps to reproduce the problem:
1. Set Chrome to "Restore my tabs on startup".
2. Open a few tabs in a normal window, then quit Chrome.
3. Start Chrome in an incognito window, either via the context menu of pinned Chrome icon on Windows taskbar or the command line switch --incognito.
4. Open a normal window.

What is the expected behavior?
The normal windows loaded with the tabs of previous session.
Incognito windows should not affect the session record of normal windows in any way.

What went wrong?
The normal window opens only a NTP, and the Recently closed tabs menu is empty.

Did this work before? No 

Chrome version: 67.0.3386.1  Channel: dev
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

I searched and found some past issues about this, but they are either strangely WontFixed ( issue 276254 ) or claimed it had fixed the issue when it had not ( issue 31540 ), or at least not for this particular set of repro steps.