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

Steps Followed:
1. Enabled Simplified view from accessibility settings
2. Navigated to wikipedia.org, long pressed on link and opened in browser
3. Closed the tab and returned to original tab and simplified view doesn't stay.

Chrome versions tested:
70.0.3538.110 , 72.0.3624.0

OS:
Android 9.0.0

Android Devices:
Pixel 2

Using the per-revision bisect providing the bisect results,
Good Build - 70.0.3522.0
Bad Build - 70.0.3523.0 

NOTE: From 70.0.3523.0 simplified view is opened in CCT.

CL: https://chromium.googlesource.com/chromium/src/+/9e6aacaef399b802ec6518369be160805ea37fb8

@ wychen: 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. Adding RB-Stable for M-70, Please remove if this not the case. 

Thanks!

Reminder M72 Stable is coming soon. Please review this bug and assess if this is indeed a RBS. If not, please remove the RBS label. If so, please make sure to land the fix and request a merge into the release branch ASAP. Thank you.

Reminder M72 Stable is coming soon. Please review this bug and assess if this is indeed a RBS. If not, please remove the RBS label. If so, please make sure to land the fix and request a merge into the release branch ASAP. Thank you.

Reminder M72 Stable is coming VERY soon. Please review this bug and assess if this is indeed a RBS. If not, please remove the RBS label. If so, please make sure to land the fix and request a merge into the release branch ASAP. Thank you.

Reminder M72 Stable is coming VERY soon. Please review this bug and assess if this is indeed a RBS. If not, please remove the RBS label. If so, please make sure to land the fix and request a merge into the release branch ASAP. Thank you.

This is regressed in M70, not a blocker for M72. 

+mdjones@, CCT optimizes for going back to the original page, by keeping the original page intact in its tab. However, visiting links in the simplified view became less usable. I don't have a simple fix with CCT. I have a few ideas:

1. When clicking "Open in browser" in the context menu, don't close the simplified view CCT. Tapping a link still closes the CCT and causes navigation in the original tab. I'm not sure if this would work though, since "Open in browser" could either open in the same app, or bring you to another app.

2. Alternatively we could add an item "Open in a new tab" in the context menu to open the link in the background tab. However, with modal CCT, it's not possible to access these background tabs, so this doesn't feel very useful.

3. Add "Open in browser" in the hamburger menu as an exit hatch to open Simplified View in a normal tab. This should behave the same as the non-CCT Simplified View, but it's hard to discover for the users.

What do you think?

BTW, I found a tricky workaround: after "Open in browser", if you choose a different browser (or different channel of Clank), tapping "back" closes the new browser and bring you back to the CCT.