Issue #2998451 by bnjmnm, HOG, lauriii, ndf, gaurav-mathur, Ambient.Impact, Chi, nod_, andy-blum, droplet: Toolbar tray rendering can result "flickering" resizing of content area to accommodate open trays

Issue #3092551 by amateescu, poojakural, pankaj.singh, priyanka.sahni, shaal, nod_, lauriii: Unclickable area to switch to a workspace

Issue #3111729 by bnjmnm, prabha1997, ravi.shankar, dww: Stable templates/CSS that differ only in comments or indentation should match core's version

Issue #2866799 by cwells: Update stylelint rule at-rule-empty-line-before to be consistent with Drupal's CSS standards

Issue #2542050 by droplet, nod_, dpacassi, Wim Leers, Sam152, andrewmacpherson, tameeshb, jonathanshaw, lokapujya, Daniel Schaefer, Chi, geerlingguy, tarekdj: Toolbar implementation creates super annoying re-rendering

Issue #2878548 by alexpott, droplet, Cottser, idebr, joelpittet, xjm, martin107: Fix CSS whitespace issues

Issue #2173527 by idflood, scresante, rpayanm, mgifford, Sam152, Wim Leers: The Menu-Toolbar area should be refactored so that Tray items are nested in the same container as their associated parent Toolbar item

Issue #2031641 by aburrows, lauriii, nlisgo, Pol, redsquid, tuutti, LewisNyman, akalata, agviu, kallehauge, _nolocation, rpayanm, saki007ster, mdrummond, RavindraSingh, brahmjeet789: Change active class to is-active

Issue #2422363 by mortendk, joelpittet, davidhernandez: Rewrite the menu CSS components inline with our CSS standards

Issue #2349871 by borisson_, Wim Leers, Arjandew: Vertical toolbar menu is broken in narrow viewports

Revert "Issue #1842140 by mdrummond, tonystar, gavin.hughes, killerpoke, lauriii, droweski, stevector, omg-its-maggie, jenlampton, Renee S: Remove title and wrapper div from theme_item_list."

This reverts commit 79395676.

Issue #1842140 by mdrummond, tonystar, gavin.hughes, killerpoke, lauriii, droweski, stevector, omg-its-maggie, jenlampton, Renee S: Remove title and wrapper div from theme_item_list.

Issue #787896 by nod_, cha0s, jp.stacey, sun, David_Rothstein, Bojhan, lisarex: Add a link so that administrators can return to their most recently visited non-admin page.

Issue #1860434 by jessebeach, Mark Carver, Wim Leers, droplet: Refactor the Toolbar JavaScript to use Backbone; fix several poorly functioning behaviors.

Issue #1938044 by hass, jessebeach, Dragan Eror: Fixed Prefix all toolbar classes to prevent theme clashes.

Issue #1847314 by oresh, jessebeach, mattimck, nod_: Fixed Reduce the dependency on JavaScript for the toolbar to display properly.

Issue #2015789 by fubhy, echoz, rteijeiro, LewisNyman, penyaskito: Remove language_css_alter() (RTL stylesheets) in favor of HTML 'dir' attribute.

Issue #1987066 by Kevin Morse, JohnAlbin, rteijeiro, echoz, ry5n: Rename files to match CSS file naming convention.

Issue #1847084 by jessebeach, trawekp, LewisNyman, nod_, tarekdj: Fixed Vertical toolbar doesn't work with overlay (measure/track displacing elements better + provide change events for them).

Issue #1855208 by bryanbraun, jessebeach: Added Toolbar tray needs to fix to top of screen on scroll.

Issue #1847198 by benjifisher, jessebeach, effulgentsia: Update the structure returned by hook_toolbar().

Issue #1137920 by jessebeach, lewisnyman, tkoleary, Bojhan, webchick, benjifisher, nod_, sjbassett, kathryn531, effulgentsia, Everett Zufelt: fixed toolbar on small screen sizes and redesign toolbar for desktop.