Twenty Thirteen: max-width stops gallery thumbnails from collapsing on mobile

[kwight]

[23675] introduced max-widths for gallery thumbnails, which stop galleries from collapsing to two columns on mobile.

Can you post before and after screenshots?

Is this happening both index and single views?

I'm not able to repeat with the ​http://twentythirteendemo.wordpress.com/ demo site.

The above screenshots are in single view, on revision 23689. I've noticed the wp.com demo site was behind at other times; I assumed it's not kept totally up-to-date?

The WP.com demo is currently synced up to core changeset r23688.

@kwight Here's another place to test: ​http://themebuster.wordpress.net/post-format-test-gallery/2/ -- which is using the gallery test from the Theme Unit Test.

The same problem exists forme on the themebusters site.

Am I missing something? Isn't it expected behaviour that galleries with more than two columns collapse to two columns on mobile?..

@obenland Let's discuss in office hours: should galleries collapse to 1-2 columns in small screens? Or just respect user column settings.

Discussed in office hours. Yes, we'd like to go back to the previous design intent, which was forcing 2-col layout for galleries in smaller screens.

23762.2.diff lets every gallery with three or more columns collapse to two columns on mobile.

@kwight Patch isn't working as expected for me. Using the Theme Unit Test gallery post format test, columns of 4-9 are still in 4-9 columns at small screen sizes.

Hm, strange – I've double-checked the patch again and still get expected behaviour, on the same unit test data (full revert, svn upped to r23706, downloaded and applied 23762.2.diff above).

Browser? I've only been using Firefox locally, since Chrome and Safari don't get down to the 360px breakpoint. Haven't checked Windows. I'll keep looking.

Confirmed working now as expected with 2.diff patch applied; testing in Mobile Safari and Mobile Chrome apps.

In 23759:

Twenty Thirteen: provide max-width override for gallery thumbnails to collapse to two columns in small screens. Props kwight, fixes #23762.