Questions:
1) Does it matter what PDF you open?
2) Does this problem happen rarely, sometimes, or all the time?
3) Do you have access to a second Mac? Does the same problem happen there?

1) It doesn't seem to matter. 
2) It happens consistently.
3) I've confirmed with 2 other members of my team that we were not able to reproduce the described behaviour on v67. After upgrading to v68, it consistently happens.

I've attached a gif illustrating the behaviour. The PDF I used was: http://gdlp01.c-wss.com/gds/6/0300002536/03/PSG11_CUG_EN_03.pdf

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	blank.gif 359 KB View Download

I should have provided my details above:

Chrome: Version 68.0.3440.84 (Official Build) (64-bit)
macOS: 10.13.6

I can't reproduce this problem exactly, but I can reproduce another that may be related with the provided PDF.

On a Mac, with Chrome 68:
1. Open http://gdlp01.c-wss.com/gds/6/0300002536/03/PSG11_CUG_EN_03.pdf
2. Scroll down a few pages.
Expected: Document finished loading, all pages appear.
Actual: Pages are totally grey from a certain point on (normally at page 5 or page 7). Loading bar never fills completely. See screenshot.

I'll bisect.

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	Screen Shot 2018-08-07 at 1.27.44 PM.png 661 KB View Download

The problem in comment 6 looks like a PDF loading issue. Whereas the bug reporter's issue is some sort of rendering or GPU issue.

I'm glad to hear the bug reproduces consistently and also on your coworker's machines. That'll make it easier to catch. Do you all have the same Mac hardware? If so, what exact model is it?

Also, I can see there are many extensions installed. It would be good to do a sanity check and try disabling all extensions. Just to make sure it is not some weird interaction with an extension.

I think the OP's issues accurately describe what I am seeing.

The hardware is different. I have first generation iMac 5K (see attachment). Others have fairly recent MacBook Pros (sorry, I can't get the specs for their machines).

The behaviour is exhibited in both guest mode, and incognito.

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	About_This_Mac.jpg 283 KB View Download

I bisected the problem I see down to https://chromium.googlesource.com/chromium/src/+/32094aacf709159a4535bcba0521fe58b125ce09

Still think it might be the same issue, though it's visually different.

I noticed I was not getting the problem at tip-of-tree, so I bisected for the fix: https://chromium.googlesource.com/chromium/src/+/2cf20af4f35dfe9da1bf956d8bcc927e4d6f3473

re: comment 9 - no, they are not the same issue. r546551 is in M67, but the bug reporters are saying this started in M68. Page loading issues cause a page to go gray. Entire tab going white is something else.

I can reproduce this on a Mac, but not consistently. Hopefully I can track it down.

I downloaded the test PDF, so there's no network loading issues. For me, the most reliable repro with a new profile is to:
1) Launch the browser, it opens tab 1 with chrome://welcome
2) Open a new tab.
3) Load the PDF in the second tab.
4) Use the mouse wheel to scroll down to page 60.

Via (reverse) bisecting, I found r561615 triggered this, and r563958 fixed this. Does this make sense?

 Issue 871848  has been merged into this issue.

bug reporters: Can you try installing Chrome Canary and see if this problem exists there? I think it may be fixed in Chrome 69 and newer. (AKA Beta channel and above.)

fsamuel / sdy: Any thoughts?

 Issue 872630  has been merged into this issue.

I have this problem with Chrome v68 but don't have the problem with the Chrome Canary.

I can also confirm that Canary [Version 70.0.3516.0 (Official Build) canary (64-bit)] is working correctly.

Tested with this PDF:
https://gopro.com/content/dam/help/hero3-white-edition/manuals/UM_H3White_ENG_REVB_WEB.pdf

Thanks for confirming it's fixed on Canary. Punting to sdy@ since I have no idea what's happening with Mac graphics.

The resize changes were very subtle, so I wouldn't want to merge to 68 (already in Stable).

 Issue 871716  has been merged into this issue.

I have Chrome 68 with this exact same issue. When loading a PDF after scrolling, Chrome renders a white page. No Plugins enabled on browser and same error in incognito, both on macOS 10.12 & 10.13. 

Now that this issue has been confirmed that is not on Canary what happens next? When will Canary be finish? Is there a patch/revision soon for 68? Is there a location I can download this now? 

Thank you in advance. 

Re. #24, it looks like this will be fixed in 69, and you can follow the release schedule here: https://www.chromestatus.com/features/schedule

I'm getting exactly the same symptoms, same version of Chrome, but not with a PDF. If you go to this Shopift test store - https://jon-test-again.myshopify.com/ (password is ahbrim) and try to make a purchase (follow checkout through using 'Omise credit card payment') you will end up at a credit card form. Start typing in a credit card number and the page suddenly goes white. Switching to another tab and back brings it back, as does opening the console.

Is a fix coming for this soon? It is affecting our payment gateway badly

Actually, you don't even need to start typing. Wait a few seconds and the page goes white on its own

 Issue 875604  has been merged into this issue.

In case this helps, on my Mac this is COMPLETELY CONSISTENT - 100% of all pdf's viewed turn white after ~1.5 seconds.  I'm using High Sierra on a 2015 Macbook Pro and this started about a week ago.  VERY annoying.  

SO GLAD to hear about the switching tabs trick - while not acceptable as a full solution, this is a life saving work around that does allow me to view the pdf long enough to download it.

As an additional workaround, opening the PDF in a new tab seems to solve the problem.

Resizing the window also works

This is happening on my Macbook pro 2015 High Sierra also.  It's extremely annoying and I would kindly request an urgent fix on behalf of all frustrated users.

Same thing happening on my 2017 Macbook running High Sierra (OS X 10.13.6). I'm running Chrome for Mac 68.0.3440.106 (Official Build) (64-bit). When I open a PDF in Chrome (e.g., any restaurant menu on the internet in PDF form), it displays for 1-2 seconds, then goes blank. The tab-switch trick does seem to work.

Same thing happening on my late 2014 Macbook Pro running High Sierra 10.13.6.  I am running Chrome Version 68.0.3440.106 64bit Official.  When I open a PDF in Chrome, it displays for about 2 seconds then goes to a blank screen. Refreshing the tab renders it.

I have been waiting for a fix for this for weeks, ended up just using canary - which is annoying but not as annoying as the bug for anyone who is doing research, I would recommend doing the same.

FYI: The fixed stable should start rolling out on Sep 4, 8 days from today (but it may take up to a week before we roll it out to 100% of Chrome installations).

Same thing happening to me on my iMac late 2015 model using Chrome 68.  Arrrrgh! Thanks & look forward to the fix.

I'm experiencing the same behavior consistently on a 2014 Macbook High Sierra 10.13.3. Chrome Version 68.0.3440.106

Macbook Pro Touch (2017)
OSX: High Sierra Version 10.13.6
Chrome: Version 68.0.3440.106 (Official Build) (64-bit)
PDF: Single page pdf, generated with pdftk

For a couple of days, PDF's go white/blank after a second or two
Today, PDF's are downloading directly to my machine
When I drag the download to the url, the PDF is visible and does not disappear

Having this same problem for two or three weeks now.  Chrome Version 68.0.3440.106 (Official Build) (64-bit), running on 2015 MacBook Pro OSX 10.11.6.  No matter the PDF, the source, or what, the preview of the file in Chrome disappears / goes blank in seconds, sometimes only if I scroll down a bit, or search for something in the file using Command F.  Happens even when viewing PDFs in my Google Drive.  

My workaround is to download the PDF to the hard drive, then I can view it using Mac Preview.

Another workaround, I noticed that if you push escape immediately after the page loads the PDF won't disappear.

 Issue 882026  has been merged into this issue.

I also have the problem.  Here are my details:
Version 68.0.3440.106 (Official Build) (64-bit)
macOS High Sierra 10.13.6

I was also having this problem with Chrome Version 68.0.3440.106 (Official Build) (64-bit)
Macbook Air Early 2014. 
MacOS 10.13.6

I just updated to Version 69.0.3497.81 (Official Build) (64-bit) and it now works! 
Interestingly, I had automatic updates turned on for Chrome, but for some reason I had to go into settings in order to update Chrome.

Updates for a given release happens gradually. Not all users will get the update at the same time, unless they manually trigger an update check by checking the Chrome version number.

As noted on https://chromereleases.googleblog.com/2018/09/stable-channel-update-for-desktop.html, "This will roll out over the coming days/weeks."

Thank you for the fix!

FYI:
* Mac OS:        High Sierra
* Bad version:   68.0.3440.106 (64 bit)
* Fixed version: 69.0.3497.92  (64 bit)

This is a very not smart question but how do I get off of this email chain.
The issue that this almost got merged into was resolved in M69 so I do not
need to see these emails any longer. Thank you so much for all your help.

Cheers,

Eric Johnson

Customer Success Manager  |  Murj Inc <https://www.murj.com/>
c: 831.334.9133 <(831)334-9133>

Unstar the issue in the top left corner (have to be signed into the account you starred it with).

 Issue 884552  has been merged into this issue.

 Issue 886538  has been merged into this issue.