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Issue metadata

Status: WontFix
Owner:
Closed: Apr 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: iOS
Pri: 2
Type: Bug-Regression



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Preloaded webpages are hidden under the omnibox and a blank white screen is displayed on tapping Backward arrow

Project Member Reported by vbhatso...@chromium.org, Apr 5 2017

Issue description

App Version: 58.0.3029.52 dev
iOS Version: 10.1.1, 10.2.1
Device: iPad Pro, iPhone7
URL: drupal.org, leo.org, yahoo.com, cnn.com

Steps to reproduce:
  1. Launch Google Chrome
  2. Go to drupal.org and scroll down the page.Close the tab.
  3. Open a  new tab and go to drupal.org again.

Observed results: 
Unable to go to the top of drupal.org

Expected results: 
User should be able to navigate to the drupal.org

Number of times you were able to reproduce: 5/5
Bug reproducible after clean install: Yes
Bug reproducible after clearing cache and cookies: Yes
Bug reproducible on Chrome Mobile on Android: NA
Bug reproducible on Safari/Firefox: Firefox: No, Safari:No
Bug reproducible on current stable build (App Version, iOS Version): M57 - No
Bug reproducible on the current beta channel build (App Version, iOS Version): M58-Yes
Link to video/image: https://drive.google.com/open?id=0B6GVWQnhaMClOWFqY3NQZEszZms

 
Summary: Preloaded webpages are hidden under the omnibox and a blank white screen is displayed on tapping Backward arrow (was: Preloaded webpages are hidden under the omnibox)
Also a blank white screen is displayed when tapped on "Backward" arrow on omnibox after preloading a webpage.

Steps to repro:
1. Launch Google Chrome
2. Go to drupal.org and scroll down the page.Close the tab.
3. Open a  new tab and go to drupal.org again.
4. Tap on back arrow beside omnibox.

Video:  https://drive.google.com/a/google.com/file/d/0Bz2uwV55gGwDdHdhNjBvTHpBcEk/view?usp=sharing


Components: UI>Browser>FullScreen
Labels: ReleaseBlock-Stable M-59
Owner: michaeldo@chromium.org
Status: Assigned (was: Untriaged)
Cc: linds...@chromium.org
Cc: pinkerton@chromium.org
Would this be RBS for 58?
Labels: Needs-Bisect
I think this should be RBS for M58 because of the white screen state described in comment #1. It looks like the nav bar is still there and the user can swipe to another tab by horizontal swipe at top of screen, but that is quite difficult to find and otherwise the user is stuck on that white screen.

I can't repo this in M59. Can we verify that this is not reproducible in M59 and if so bisect to see what fixed this? Hopefully we can cherry pick that fix. (Note that I couldn't find a preload bug that was fixed in 59 but not merged to 58 that would be a cause of this.)
Preload Bug - https://bugs.chromium.org/p/chromium/issues/detail?id=698833
698833 was fixed on build 58.0.3029.51 dev

For the current bug :
Good Version - 58.0.3028.0 
Dogfoody.ipa build Location picked from : https://pantheon.corp.google.com/storage/browser/chrome-signed/ios-G1N/58.0.3028.0/iphoneos10.2/ios/1213/?pli=1
Good Version Revision - c49428ef69cfd173c5d7eaeb39982f44ca68da78-refs/heads/master@{#454140}
Link - https://drive.google.com/open?id=0B6GVWQnhaMClcnRHMGNpVDFVVkE

Bad Version - 58.0.3029.0
Link - https://drive.google.com/open?id=0B6GVWQnhaMClM2F2QnFCXzhaeWc
This bug is repro'ed on 58.0.3029.51 dev also.
This bug is NOT repro'ed on 59.0.3069.0 Canary.
 Issue698833  was fixed and verified on 59.0.3049.0 Canary.
Labels: -Needs-Bisect -M-59 M-58
Cc: kkhorimoto@chromium.org eugene...@chromium.org
+eugenebut@ and kkhorimoto@ as they were involved in the related preload bugs.

The fix in M58 was  Issue 705637 , but it looks like that fix isn't complete as the blank screen on navigating back is still seen. I will look to see if there is anything else we need to do along with the change here: https://codereview.chromium.org/2779763006

Cc: sdefresne@chromium.org
Components: Internals>Preload
These can be 2 separate bugs:
1.) Fullscreen bug that covers the top of the page
2.) Preload bug which was caused by New Architecture refactorings

CCing Sylvain, who was refactoring BVC.
Please test this against 58.0.3029.71.

I don't see the same behavior. However, I do see the content hidden beneath the toolbar if you navigate back then forward after step 3.
Tested on 58.0.3029.71dev on iPhone 7 iOS 10.2.1
https://drive.google.com/open?id=0B6GVWQnhaMClNXJsb0tzVXN4ZDg
I am no longer able to repro this issue.
Thank you for checking.

Regarding the issue I saw in #12, the content is only hidden if you navigate back to the NTP, then forward to the content. Also, the user is able to scroll to the top of the page and is not blocked.
If this issue cannot be reproducible anymore then can we confidently close it now?
Status: WontFix (was: Assigned)
I've created a new bug for the hidden content that I saw:  crbug.com/711445 .

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