Sunday, September 03, 2017

Chrome is cutting off pages when printing

Just a quick heads up for anyone struggling with Chrome not printing all pages.

There are some known issues with Chrome

If you're affected please log in to the Chrome bug tracker and star any of the following issues

(but please don't post redundant me too comments)

Printing cut off when using bootstrap grid

Print page scaling cuts off content

Print selection is missing some contents / pages

getBoundingClientRect() wrong when printing

Thursday, June 01, 2017

Safari: A problem occurred with this webpage so it was reloaded (Update)

After filing an initial bug and reaching out to some Apple developers, Apple has been able to
reproduce the problems causing these crashes in Safari, here is the list of bugs filed which
reproduce the cryptic error message "A problem occurred with this webpage so it was reloaded"

Out of memory crash with MapBox-gl-js

Camera/Canvas file input crash: A Problem Occurred with this Webpage so it was Reloaded

Pinch zoom crash: A problem occurred with this web page so it was reloaded

Page that allocates and destroys canvas elements in a loop gets jettisoned on iOS

It does somewhat concern me that after trawling thru github, I found lots of developers battling these
problems but nobody had bothered to report the issue back to the webkit bug tracker (radar is simply
a black hole from the late 20th century).

By default iOS has reporting analytics turned off, which may be the reason why these kind of
problems have been occurring for years without being resolved.

The crash logs on iOS for these bugs indicate it's an out of memory, aka Memory leak/GC problem,
but they only include a list of processes and doesn't even seem to include the url of the page which
triggered the crash.

Maybe does Apple get more detailed crash reports, but from an outside perspective it seems they
don't and it's their users and web developers who are suffering as a result.




Thursday, May 18, 2017

Mobile Safari: A problem occurred with this webpage so it was reloaded

This is one of the most frustrating and cryptic error messages thrown on the web today.

There are legions of articles which suggest playing with various setting on iOS, but in reality don't bother with them.

Basically this message means Safari crashed (like Chrome Aw Snap, but without any extra information or the ability to provide feedback),

One of the most likely cause for this to happen is when Mobile Safari runs out of memory,
in my current case it relates to a crash after attempting to take a photo from <input type="file"> and resizing via canvas

You can find crash logs under Settings -> Privacy -> Analytics -> Analytics Data (iOS 10)

As far as bug reporting goes, Apple operates their own event horizon with their radar system, but you can try a few of these public resources, http://www.openradar.mehttps://bugs.webkit.org/

Meanwhile, other major browsers make developers life easier with a more open approach: