[LON-CAPA-users] problems with Chrome browser?

Raymond Batchelor batchelo at sfu.ca
Tue Nov 19 20:57:13 EST 2013

In the only report I received, the student was working Nov 17 at ~11:20AM PST.  
In the evening of the same day, they successfully completed their assignment, apparently from the same IP and using the same access server.

They appear to have been using "Safari on Win client".  What that actually means I'm not sure.

I have not been able to reproduce the phenomenon myself yet.

I've tried Chrome/Win and Firefox/win, Firexfox/MacOSX and Safari/iOS7.0.4(iphone4), so far, and could NOT reproduce the phenomenon, yet.

----- Original Message -----
From: "Joseph Mingrone" <jrm at mathstat.dal.ca>
To: lon-capa-users at mail.lon-capa.org
Sent: Tuesday, 19 November, 2013 15:25:55
Subject: Re: [LON-CAPA-users] problems with Chrome browser?

"Mills, Douglas G" <dmills at illinois.edu>

> HI All,
> In the past two days I’ve received at least four reports from students
> in different classes (so not using the same problems) of parts of a
> multipart problem being presented out of order with the submit buttons
> in the wrong places. An instructor also reported when following up on
> one of these reports seeing a problem in authoring space appear with
> the submit button for question 5 at the top of the screen followed by
> the list of correct answers normally at the bottom of the screen,
> followed by question 5 and then the other four questions in their
> correct order.  In hitting randomize many times in Chrome I’ve been
> able to replicate this also. Initially I thought it was a problem with
> a particular variation of the problem itself, but taking any of the
> seeds and trying again does not replicate the problem; indeed, even
> submitting an answer so that the page reloads causes the problem to go
> away, so I’m thinking this is some type of random issue with Google
> Chrome, not with the coding or our problem itself. I’m still
> investigating this, checking on browsers used by other students who
> had the problem, etc. but so far it looks like Chrome on both Windows
> and Mac computers. Anyone else seeing or hearing anything along these
> lines?

Coincidentally, I received this message from a student today.

"I just wanted to send a message letting you know the assignment this
week was "behaving" oddly. Every time I entered an answer the entire
page reformatted and moved all the boxes with answers around, I would
have to refresh the page 2 or 3 times before it was showing up in the
proper order again. In the end everything worked and all my answers were
correct, I just thought I would let you know."


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Raymond J. Batchelor, PhD.
Department of Chemistry
Simon Fraser University

Phone: 778-782-5635

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