Steps to reproduce: 1. Load MP-stage app on your device 2. Press the price button for a paid app. 3. Log in with a valid account and enter a valid PIN and continue. Expected results: When the Confirm Payment page is loaded, the throbber is displayed as a spinning circle. Actual results: There is a line that is spinning in a circle. The issue is also reproducing for the "Connecting to Persona" window after entering a valid account, before the PIN page is displayed. Notes/Issues: Verified on FF35 (Android 4.2.1). Attaching screenshot for this issue.

This might be two separate issues, because the page you have screenshotted is a Bango one, the comment "The issue is also..." is related to our pages.

This CSS was borrowed from Gaia. Needs some CSS to fix / fixed via Zippy.

Checked Zippy styleguide - stable FF Android (32.0.1) everything looks fine. FF Android Nightly (35.x) it looks like a horror show. Spartacus' styles look fine in both versions of FFAndroid so we'll update zippy to use the same styling as Spartacus and Bango can crib from there. This may be a regression in FF android too, but we can work around it with simplified styles in any case. The other issue seems to be Persona views are breaking - we originally based our throbber styles on persona so it's not too surprising those styles are not working in nightly too. I'll file a bug there too. I will file a bug on Persona.

PR is here for Zippy https://github.com/mozilla/zippy/pull/155

Filed github issue for persona here: https://github.com/mozilla/persona/issues/4194

Github issue has been moved to a platform bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1072579

Simplification of Zippy styles (works around the platform issue): https://github.com/mozilla/zippy/commit/ca10ecbfd70262b6389f1c48ec5b3da732966c7b As this is a confirmed regression in FFAndroid there's not a lot else we need to do from this side. Bango can use the same styles as used in Zippy if a workaround is needed. Going to mark as a dupe of the platform bug.