Make the menu dropdown as scrollable.

I have tested the patch with drupal version 9.5.3. Patch doesn't applied. getting some errors like this
Checking patch css/admin.toolbar.css...
error: while searching for:
border-right: 1px solid #ddd;
}

.toolbar .toolbar-tray-horizontal ul ul li.menu-item:first-child {
border-top: 1px solid #ddd;
}

.toolbar-tray-horizontal li.menu-item--expanded.hover-intent ul ul,

error: patch failed: css/admin.toolbar.css:34
error: css/admin.toolbar.css: patch does not apply
Checking patch js/admin_toolbar.hoverintent.js...
error: while searching for:
// Other wise we get unwanted behaviour where menu items are expanded while already in hovering other ones.
$(this).parent().find('li').removeClass('hover-intent');
$(this).addClass('hover-intent');
},
out: function () {
$(this).removeClass('hover-intent');
},
timeout: 250

error: patch failed: js/admin_toolbar.hoverintent.js:6
error: js/admin_toolbar.hoverintent.js: patch does not apply

#42 is applied correctly in 9.5.3 and in my opinion works as expected.

Thanks for providing this solution.

Tried testing #42 with v3.3.0 on Drupal 10.1.x-dev.
On applying patch, getting below:

Skipped patch 'css/admin.toolbar.css'.
Skipped patch 'js/admin_toolbar.hoverintent.js'.

Rerolled #40 for the v3.3.1 - 3.x-dev 50ff7eb6 commit. Tested with Drupal 9.5.8.

Tried to apply patch #46 it is working fine for add content menu but not working properly for last content type in content type list for content type I have shared video.
need to work on it.

We've changed a little bit the patch so it can apply to Claro but also to Gin and works a little better with submenus as shown in #47 video.

We haven't tested yet on RTL theme and also the vertical admin menu bar for Gin is not functional, so keeping status as Need work.

patch #46 works for me in drupal 9.4.10 Panopoly thank you.

Patch #46 could not be applied in admin_toolbar 3.4.1 and drupal 9.5.10.
Instead #48 was applied correctly and seems to work correctly.

#48 works well for us on Drupal 10.1.3 and Admin Toolbar 3.4.1

Indranil Roy → made their first commit to this issue’s fork.

I have just made a couple of theming changes based on #48 to improve the appearance. Using Claro theme and Drupal 9.5.11.

I rerolled patch #48 for Admin Toolbar 3.5.0 on Drupal 10.3.1

The attached patch does not build on the currently dominant approach to this issue (#54 at the moment), and allows the sub-menus to scroll (rather than expand laterally) as mentioned in the original request. It introduces a new override template with an added container div around the ul's to achieve the desired result. This required some adjustments to the CSS and Javascript, including a direct copy/tweak of some of the core toolbar module code.

This is my first contribution, so kindly let me know if I've missed any steps or approached the process incorrectly. Based on 3.5.1 running on core 10.3.6.

Hi
I've tested patch #55 on Drupal 10.3.x
The patch is applied successfully...

The menu dropdown is scrollable after applied patch

Screenshots