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This is a brain dump of problems seen with the Default Admin forms sidebar, such as on the node edit form. They need to be triaged and fleshed out into separate issues with details.
Tested on main as of commit 03e37d380df (Mon Aug 24 17:05:17 2026 +0100).
I didn't check for existing issues in the Gin queue or compare with the Gin theme.
- #3619153: Admin theme's collapsed / hidden sidebar should be operable without JavaScript
- #3619154: Accessibility fixes for Admin theme's toggle control
- #3619155: Admin theme's toggle button disappears on hover/focus in forced colors
- #3619156: Investigate and fix tab order issues on Admin theme's sidebar toggle
- Also folded into #3619154: Accessibility fixes for Admin theme's toggle control
- Also folded into #3619154: Accessibility fixes for Admin theme's toggle control
- #3619127: Forms sidebar doesn't work with error links from Inline Form Errors module
- Also folded into #3619154: Accessibility fixes for Admin theme's toggle control
Comments
Comment #2
kentr commentedComment #3
kentr commentedComment #4
kentr commentedComment #5
kentr commentedComment #6
mgiffordThis is great. Thanks @KentR.
It will definitely need to be broken into sub-issues, which hopefully @mherchel can take on.
We looked at it this morning, and there are definitely some legacy Gin issues that we need to clean up.
Some of these issues can be solved by using the PopOver API rather than custom JS.
We had some challenges testing Inline Form Errors in the sidebar, as I think we need a custom module to put custom fields into the sidebar.
Some of this is a best practice and not technically a WCAG failure. That's fine, still good to do for usability.
Noting that the behavior is different in mobile than desktop is interesting. It is a modal in mobile.
Escape is currently used to minimize the left sidebar, possibly hitting escape again could minimize the right sidebar (or if the left sidebar is already minimized, it minimizes the right one).
Comment #7
kentr commentedTo see the problem with IFE, follow STR #5 in #2848507: Indicate that grouping elements have child element errors for ux and a11y (For "accordion" style details elements on the node edit form), but with Default Admin and a narrower viewport so that the sidebar is closed / hidden.
Edit: IOW, no need for a custom module...
I'm planning to work on the IFE problem next since I'm working on the related sidebar problems in #3604037: [PP-1] Indicate that grouping elements have child element errors for UX and a11y.
Comment #8
mherchelWill break these out later today or tonight
Comment #9
kentr commentedI went ahead and created the issue related to IFE since I know the STR and am working with the sidebar ATM: #3619127: Forms sidebar doesn't work with error links from Inline Form Errors module.
Comment #10
kentr commentedAdded another:
Similar to the toggle control, the close button shouldn't be rendered as a link with
role="button".Comment #11
kentr commentedComment #12
kentr commentedBy accident I think figured out why the tab sequence inside the sidebar is off.
There's a form container named
default_admin_sidebarthat contains the close button and thePublished(akastatus) field.But the element that contains all of the elements in the sidebar is actually the
advancedcontainer. Thisdefault_admin_sidebarcontainer is inside theadvancedcontainer.So, the
Revision log messagefield precedes the close button in the DOM.In the DOM, the sidebar is
id="edit-advanced"and this inner element with the close button isid="edit-default-admin-sidebar".Comment #13
mherchelDid a little splitting. Will work on it more tomorrow.
Comment #14
mherchelComment #15
mherchelGoing to close this out as its all split up now. We can use #3576488: [meta] Admin theme: path to beta and stable to track these.