coda.io - Firefox browser is not supported

[webcompat-bot]

URL: https://coda.io/unsupported-browser?continueTo=%2Fsignin

Browser / Version: Firefox 66.0
Operating System: Windows 10
Tested Another Browser: Yes

Problem type: Site is not usable
Description: App doesn't work on Firefox
Steps to Reproduce:

Browser Configuration

• None

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[cipriansv]

Thanks for the report,
I was indeed able to reproduce the issue. Firefox browser is not supported.

Tested with:
Browser / Version: Firefox Nightly 68.0a1 (2018-05-07), Chrome 74.0.3729.108
Operating System: Windows 10 Pro

This is the web page displayed in Firefox Nightly:

And this is the web page displayed in Chrome:

[karlcow]

HTTP/1.1 302 Found
Server: nginx
Date: Thu, 09 May 2019 23:29:47 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 126
Connection: keep-alive
X-Download-Options: noopen
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Referrer-Policy: strict-origin-when-cross-origin
Content-Security-Policy: base-uri 'none'; child-src 'self' * blob:; connect-src 'self' https://cdn.coda.io wss://coda.io https://coda.io wss://*.intercom.io https://coda-us-west-2-prod-blobs.s3.us-west-2.amazonaws.com https://coda-us-west-2-prod-blobs-upload.s3-us-west-2.amazonaws.com https://*.intercom.io https://*.intercomcdn.com https://uploads.intercomusercontent.com https://app.getsentry.com https://iframe.ly https://cdn.iframe.ly https://api.rollbar.com https://baconipsum.com https://api.trello.com https://www.google-analytics.com https://rum-collector-2.pingdom.net https://api.stripe.com; default-src 'self' https://cdn.coda.io; font-src data: https://cdn.coda.io https://js.intercomcdn.com https://fonts.gstatic.com https://fonts.googleapis.com; form-action 'self' https://messenger-apps.intercom.io https://intercom.help; frame-ancestors 'self' *.coda.io ; frame-src *; img-src * blob: data:; media-src https://js.intercomcdn.com; object-src 'none'; report-uri /csp-violation; script-src 'strict-dynamic' 'nonce-1ae32f19e43749508568ab6f0fd5bffc' 'unsafe-inline' 'unsafe-eval' https:; style-src 'self' 'unsafe-inline' blob: https://cdn.coda.io https://fonts.googleapis.com; worker-src 'self' blob:
Feature-Policy: autoplay 'self'; fullscreen 'self'; geolocation *
Location: /unsupported-browser?continueTo=%2Fsignin
Vary: Accept, Accept-Encoding
Strict-Transport-Security: max-age=63072000; includeSubDomains; preload

so this is done server side

Location: /unsupported-browser?continueTo=%2Fsignin

Their message is that

Coda only works on Chrome and iOS right now. We’re working to support other platforms. In the meantime, please download the app or use Chrome.

So they are in the process it seems. So I'm not sure we can do anything about it in the meantime. They know it. We know it. They want to get there, we want them to get there.

After faking the UA to be chrome, I could Sign Up.

Then indeed I get errors in the console such as

TypeError: window.document.caretRangeFromPoint is not a function

caretRangeFromPoint which is not supported in IE and Firefox, but supported in Edge, Blink and WebKit.

The only mention I can find is https://bugzilla.mozilla.org/show_bug.cgi?id=552695#c5
I don't know if solving this would be enough.

[karlcow]

To note this polyfill.

https://github.com/Abel-Jr/OurSite/blob/55c221dd8abf474a1075c5d3a817eaae97b73fce/wp-includes/js/dist/dom.js#L614-L647

[karlcow]

Close as duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1550635

[karlcow]

Alex DeNui, The CTO is on github @adeneui and also @zurawiki who seems to be part of their team.
Maybe they would be interested by the polyfill.

And maybe Mozilla can help them figure out which parts are missing to make the applications cross-platform.

[lock]

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