Blank page when reloading a page

[WilliamCB]

Sometimes I reload a page. It might be because I'm not sure what to do when I get the Etherpad message about the pad being open in another window. Or because I want to be sure I've got all my notifications. Sometimes I then get a completely blank page, with absolutely nothing on it at all. This has happened to me a few times on my iPhone but today for the first time it happened on my desktop browser (after the Etherpad message, prompted by looking at the same document on my phone, at https://research.unity.ac/content/rr/4kkhfFXZ). Safari Version 7.0.6 (9537.78.2)

Using the "Clear all website data" option in Safari fixes the issue - on my desktop machine.

[mrvisser]

Hi @WilliamCB , I'm unable to reproduce this at least on Safari 8. We would need some more information to get to the bottom of this, particularly if it happens again, we need to know of any errors on the webpage reported by the browser.

To get the error console from Safari, please follow the instructions that lead you through the "Develop" menu, then to "Show Error Console": https://support.apple.com/kb/PH17195?locale=en_US . Any errors that occurred will be in the error console.

Note that to get the Develop menu it may be necessary to enable it in Safari preferences, as noted in the instructions.

[WilliamCB]

Thanks @mrvisser

I can reproduce it by:
Opening a pad on the desktop
Opening the pad on my phone and editing the pad so that the "Force reconnect" message comes up on the desktop
Hitting the refresh button on the desktop.

I did this with the Safari Error Console open, but it showed no errors, at least none that I could see.

[mrvisser]

@WilliamCB thanks for checking the error console, strange that the page isn't loading and there aren't any errors. I'm still unable to reproduce on a new document I've created to test this using the instructions you posted. Does this happen to you on all documents? If you can paste me a link to a document that gives this behaviour, I can try there as well.

[sathomas]

FWIW, This did happen to me once the other day. I clicked on the force reload and got a blank document. When I refreshed the page using the browser, it reloaded correctly. I can’t reproduce the behavior, though.

On Apr 14, 2015, at 6:34 AM, Branden Visser [email protected] wrote:

@WilliamCB
thanks for checking the error console, strange that the page isn't loading and there aren't any errors. I'm still unable to reproduce on a new document I've created to test this using the instructions you posted. Does this happen to you on all documents? If you can paste me a link to a document that gives this behaviour, I can try there as well.

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[mrvisser]

This seems to be a bit different, as William is hitting the browser refresh button and is getting a completely blank page, not just a blank document.

[sathomas]

You’re right.

Since it only happened to me once, I chalked it up to Internet weirdness and didn’t think much about it.

On Apr 14, 2015, at 6:41 AM, Branden Visser [email protected] wrote:

This seems to be a bit different, as William is hitting the browser refresh button and is getting a completely blank page, not just a blank document.

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[nicolaasmatthijs]

I've seen this a number of times on my phone as well, and it's usually pretty easy to reproduce by sufficiently refreshing the page. The only thing that fixes the issue is clearing the cache entirely.

I believe the bug we're running into is http://tech.vg.no/2013/10/02/ios7-bug-shows-white-page-when-getting-304-not-modified-from-server/ (found via kolber/stacey#109).

Assigning to @simong to check if there's anything we can do to resolve this.

[davidoae]

If the problem is specific to a os/browser version we could maybe have
nginx detect that browser and modify the headers appropriately.
I note however that William seems to have this problem on desktop too.

On 12 May 2015 at 07:11, Nicolaas Matthijs [email protected] wrote:

I've seen this a number of times on my phone as well, and it's usually
pretty easy to reproduce by sufficiently refreshing the page. The only
thing that fixes the issue is clearing the cache entirely.

I believe the bug we're running into is
http://tech.vg.no/2013/10/02/ios7-bug-shows-white-page-when-getting-304-not-modified-from-server/
(found via kolber/stacey#109 kolber/stacey#109
).

Assigning to @simong https://github.com/simong to check if there's
anything we can do to resolve this.

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