We've gotten a lot of complaints in the marketplace-feedback mailing list in the last few days from Android folks complaining they can't scroll within the Marketplace. Here are a few: user: Anonymous user-agent: Mozilla/5.0 (Android; Mobile; rv:22.0) Gecko/22.0 Firefox/22.0 ip address: 201.191.198.2 platform: android using Marketplace app: No submitted from URL: /feedback Feedback: hi, Great effort put into this marketplace, I imagine that the target market are the mobile devices with Firefox OS but I'm using CyanogenMod 10.1 ( android 4.2.2) on a Nexus S and Firefox 22.0 and the scroll through the app list is awful, feels like is forcing pagination on you and the experience is just shocking and not in a good way. --- user: Anonymous user-agent: Mozilla/5.0 (Android; Mobile; rv:22.0) Gecko/22.0 Firefox/22.0 ip address: 82.169.171.34 platform: android using Marketplace app: No submitted from URL: /feedback Feedback: Hello, I am browsing the marketplace on Firefox for Android, but scrolling is near impossible, and the interface is jumpy, as if it's constantly rendering. --- user: Anonymous user-agent: Mozilla/5.0 (Android; Mobile; rv:22.0) Gecko/22.0 Firefox/22.0 ip address: 94.11.128.245 platform: android using Marketplace app: No submitted from URL: /feedback Feedback: I can't scroll the list of apps or the category selector makes the store very hard to use. I'm oa n galaxy nexus.

This is what Basta emailed to me when I forwarded him one of these emails: "There's apparently a bug in the current version of Firefox for Android. It's fixed in Firefox Beta, though, so it should go away on its own in about 5 weeks.

This might be a dupe of https://bugzilla.mozilla.org/show_bug.cgi?id=891155

Is there something we can do to fix it in the 5 weeks until the next android comes out?

It's either a dupe of that ... or we made it worse with bug 892717. My vote is to fix that bug first, which we (likely) can.

Aside from a one-off hack, no. Our code isn't doing anything wrong; this happens all over the web.

The problem here is that Firefox is evidently not performant at rendering SVGs. As Basta says we can hack around this, and avoid things like background-size and sprites but doing so would require more HTTP requests. WebKit handles the SVGs like a pro, and hopefully Gecko will be there one day. If the scrolling issue is not because of SVGs, then we have a different Gecko platform we're tripping up on. Conclusion: we can continue using workarounds if we absolutely need to (it's worth noting that we still need to inline our CSS on Mobile AMO because our markup triggers some weird Flash of Unstyled Content in all versions of Firefox for Android).

Can you link to the platform bug?

I think bug 891155, but that looks specific to B2G. Basta and I will look at this today, and if there's not a bug on file, we'll file with a test case.

I don't see any problems when using Fx23 (Firefox Beta). Scrolling works as expected and is smooth. I see the bouncing search bar issue when using Fx22 (Firefox Release). That issue seems to have been fixed by backing out bug 876542 for b2g. Fennec also had some Fullscreen issues that were fixed. Those might have also fixed the Marketplace behavior in Fennec (Fx23). We have no plans to uplift those fixes at this point in the 6 week cycle, so we'll need to just ride the trains and wait for Fx23.

wontfixing based on comment 9. Thanks for looking cvan & basta

It looks like this is fixed in Fennec Fx23 as it isn't happening on the the current beta.