With the exception of the two "Media Update" posts, all other posts on "Gallery-A Demo Blog" were created before the November 2012 update to media handling.

With the exception of "In the Beginning" and "Gallery as a Custom Excerpt," which are using the Gallery post format, all other posts on Gallery-A Demo Blog are using the Standard post format.

The galleries in question are all using the default thumbnail grid type Gallery and this phenomenon appears irrespective of post format. For Gallery post format, of course, it is only apparent in the single post view, not on the front page (Index) view.

When Twenty-Thirteen was released here, all the existing default thumbnail grid type of Gallery on Gallery-A Demo Blog were left-justified in the content container. With the recent "update" the 3-column (default) thumbnail grid type galleries became centered in the content container, but are still left-justified; the existing 2-column and 1-column thumbnail grid galleries remained left-justified in the content container. You can see this in the screenshots I uploaded to the Media Library there.

When creating new posts with 2-column and 1-column galleries using the default thumbnail grid type, all are now centered in the content container, but are again left-justified, like the default 3-column gallery. You can see my draft test post here. (Private blog-link open to Staff and I will leave it for now with the Twenty Thirteen theme. I will also upload my screenshots to the Media Library there as well so you don't have to switch between two sites.)

This phenomenon is limited to only Twenty-Thirteen and old posts and since there aren't any other forum threads on this "problem" I guess we'll leave it as esoterica. I'll be happy to continue by email if you think it beneficial.

Again, thanks for the time and effort you've taken on this so far.

I do appreciate the time and attention to this.

If so, then 2-column and 1-column default thumbnail galleries are still not feeling the love, either in front page or single post view

I can't repeat it. :(

Did you get a chance to look at my test site? http://lancetestthirteen.wordpress.com/ — the standard posts there, with 1 and 2 images per gallery, *should* be centered.

Since I want to continue rotating other themes, I've uploaded a number of Twenty-Thirteen screenshots to that site's Media Library showing both front page and single posts.

Thanks again.

As things work currently, it's all working as intended.

1. Single views should be similar for either standard or gallery post format. Centered, columns should respected (from the shortcode).
2. Index views should be special (different) only for gallery post formats. The first image should be larger, 300 px by 300 px—and the rest should be small thumbnails. Left-aligned no matter how many images.

Thanks.

There's never been an issue with posts using the Gallery post format (of which there is one on my Gallery demo site).

Regardless, it's interesting to note that the default 3-column gallery using the Standard post format is now centered, whereas before it was left-justified.

And changing either of the two other posts (2-column and 1 column) from Standard to the Gallery post format doesn't do a thing to change their alignment in the single post view.

So, hopefully, we're now talking apples to apples. :)

I think we might be looking at different scenarios; we are focusing on the gallery post format display—not galleries in other kinds of posts.

I created some tests: http://lancetestthirteen.wordpress.com/

If you are using "standard" and not "gallery" post formats, that could be a bug we'll need to address.

Chrome just updated itself to v27 and the problem is still there.

I'll keep you informed.

In my Media Library.

Cache was cleared.

I'm also noticing a bit of a lag before the Like button appears.

In my Media Library.

Have you tried clearing your browser cache? Otherwise please send us a screenshot. You can upload this to your blog's media library.

Thank you!

The 3-column Gallery is now centered in both the front page and single post view, but the 2- and 1-column Galleries are still showing as left-justified in both views (at least in FF21). You can see them by clicking on the links in my first post in this thread.

And thanks for looking.

Note that you will need to click the "exit the preview" link at the top of the Appearance → Themes → Customize → Colors panel to see the Newsworthy theme's default color tools—the options should match what you find in Appearance → Background and Appearance → Header.

-Gabe

The poll displaying in your footer is a glitch. I've let our developers know and they will look into it for you. Thanks!

In that screenshot, you can see the error "Uncaught TypeError: Cannot read property 'name' of undefined" next to file name fonts-customizer-admin.js. This is just the kind of thing that makes tracking down bugs much easier, thanks @csonnek!

@odeegulmatico, in the mean time, you should be able to do everything you can with the Customize screen in the other Appearance screens (like Header and Background) like justpi and timethief mentioned earlier in this thread.