Web-bugs: publicaccess2.croydon.gov.uk - Map details are not rendered correctly

[davehunt]

URL: http://publicaccess2.croydon.gov.uk/online-applications/spatialDisplay.do?action=display&searchType=Application

Browser / Version: Firefox 64.0
Operating System: Mac OS X 10.13
Tested Another Browser: Yes

Problem type: Something else
Description: A legend and flter should be displayed, and the map should show red boundaries when zoomed in
Steps to Reproduce:
Once the map has loaded, click the zoom (+) button five times. This should show red boundaries on the map. It's working in Safari and Chrome for me, and according to another source is working in Edge.

_From webcompat.com with ❤️_

[softvision-sergiulogigan]

Thank you for the report, @davehunt

I can see the differences you reported on Windows 10 too:

Furthermore, I feel like Firefox is not rendering the map as fast or as smooth as Chrome does.
This calls for further investigation.

[karlcow]

Yes I guess the missing red lines are due to the missing legend on the right.

[karlcow]

The map is created through an iframe with user-agent sniffing.

http://publicaccess2.croydon.gov.uk/PublicAccessWeb/js/legend.js

function showLegendInTooltipDialog(node,map) {
…
}

I don't think I will be able to find the source of the breakage given the complexity of the code, but the developers have a better knowlege of their own code.

Let's move this to needscontact.

[karlcow]

To contact them
https://secure.croydon.gov.uk/eforms/ufsmain?formid=EXT_SC_CUSTOMER_CONTACT&ebz=1_1539054116173&ebd=0&ebp=10&ebz=1_1539054116173

And the map solution is made by https://www.idoxgroup.com/
https://www.idoxgroup.com/about-us/contact-us/

[davehunt]

I've heard from the site technical support team responsible for the website, and they pushed an update this weekend, which fixes the polygons rendering on the map. The map still takes considerably more time to load on Firefox than it does on Chrome, though. I measured 12.61 seconds for Chrome and 24.27 seconds for Firefox (65.0a1, 20181026100128)

[karlcow]

@davehunt Thanks a lot. I will close the webcompat issue here as fixed.
For the performance issue itself, maybe we could open an issue on Bugzilla. Would you do want to do that?

https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Canvas%3A%20WebGL

[davehunt]

Thanks @karlcow. My previous measurements were with the network tab in devtools open. Without this, there doesn't appear to be any noticable difference between Firefox and Chrome in initial load time. Zooming the map feels slower in Firefox but that's most likely because Chrome animates the zoom, the actual effective loading time seems very similar in both browsers.