M	ChromeOS	Chrome	ARC	Type	Channel
59	9460.5.0	59.0.3071.15	(multiple)	release	dev

What steps will reproduce the problem?
(1) Assign the following User Settings in CPanel:
    Pages to Load on Startup: chrome://policy, chrome://settings
    URL Blacklist: *
    URL Blacklist Exception: chrome://policy, chrome://settings
(2) Repeat login and logout device a few times to see if any of the whitelisted URLs is blocked at any point.


What is the expected result?
The whitelisted URLs chrome://policy and chrome://settings should never be blocked as long as the policy is effective.


What happens instead?
The whitelisted URLs were blocked intermittently.


Please provide any additional information below. Attach a screenshot if
possible.

I ran the test as described above, signing in and out for 10 times on Reks and Peppy side by side.
For tries #1-3, both were behaving normal and the whitelisted pages were not blocked.
For tries #4-5, the whitelisted pages were blocked on Reks while they were displayed on Peppy.
For tries #5-6, the whitelisted pages were blocked on Peppy while they were displayed on Reks.
On try #8, the whitelisted pages were blocked on both Peppy and Reks.
For tries #9-10, both were behaving normal and the whitelisted pages were not blocked.

Logs and screenshots attached.
 

Deleted: Screenshot from 2017-04-24 18:49:39.png 330 KB

	Screenshot from 2017-04-24 18:49:39.png 330 KB View Download

Deleted: Peppy-debug-logs_20170424-173224.tgz 129 KB

Peppy-debug-logs_20170424-173224.tgz 129 KB Download

Deleted: Reks-debug-logs_20170424-173232.tgz 163 KB

Reks-debug-logs_20170424-173232.tgz 163 KB Download