In certain cases, new collections can't be added to the home screen. This happens because a bug in the code causing app icons from the cache to not appear properly.
Created attachment 813862 [details] Patch - redirect to github PR Previously if an icon was null, the code simply failed trying to draw "null" into the canvas. Now if one if the icons is null or undefined, the icon will adjust itself to use a 2-apps or 1-app template.
Comment on attachment 813862 [details] Patch - redirect to github PR Works well
merged into master 5c4122723af26bf6282199251124b0540b0c374c https://github.com/mozilla-b2g/gaia/commit/5c4122723af26bf6282199251124b0540b0c374c
Created attachment 8342848 [details] Missing icons Is this the bug I'm seeing on this screen capture or a different one? This is from an up to date Leon.
This looks like the same issue - can you write the STR here?