Possible proxy cache hit issues

[ICT4ALL]

Hi, We have had a classfull of pupils using x-ray googles. On two occasions on the same day several pupils were seeing the same remixed version (letters missing) of the goggles website https://goggles.mozilla.org/ before installing the bookmarklet.

For these pupils when try tryed to drag the bookmarklet it simply dragged the image instead.

In some other cases it installed a bookmarklet ok but then xray-goggles did not work (nothing happened)

Tried pressing CTRL+f5 on bookmarlet install page https://goggles.mozilla.org/ and reinstall the bookmarklet but it still displayed the same remixed page version of https://goggles.mozilla.org/

We use McAfee Web gateway Proxy and IE 11 on Windows 7 32bit.

[ICT4ALL]

have also tried clearing browser cache to no avail

[Pomax]

Do you happen to have a screenshot of what that looks like? We have windows machines available for testing with IE11, but no McAffee gateway proxy.

On plain IE11, the site does have some CSS glitches that will need to be addressed, but I don't see any missing letters, and dragging the bookmarklet works as expected.

[ICT4ALL]

Will work most of the time. Missing letters only exhibit themselves when multiple users are using goggles simultaneously. We may even be seeing the version of the page held in cache for another school. We share the proxy with hundreds of other schools in the Birmingham UK area. I may raise a call with our ISP/proxy operator.

[Pomax]

Hm, yes that does sound it might be the proxy. Hopefully something they can identify and fix!

[ICT4ALL]

I asked ISP and they are NOT caching any web pages at all. Will try to get screenshot and post.

[Pomax]

Cheers, hopefully that'll have clues as to what's going on. Could I also ask for a screenshot of the browser's developer tools "console" tab, when things do go wrong? Maybe there's some information that could be useful to determine what's going on in that as well.