Search Issue Left Navbar : Inaccessible by keyboard and no conforming alternate

Issue Summary

The dock/undock element is not accessible by keyboard alone and there is no conforming accessible version of the same functionality reachable from the non-conforming page.

On collapsing the filter section on the left side:
Element: Dock the filters panel.
Location: Left side of the page

Note: On hovering of the left highlighted part of the page, It displays the filter section. Make it accessible even through keyboard navigation.

Steps to Reproduce

1. In the Jira dashboard, Navigate to the "Issues" menu link in the header section.
2.  Navigate to "Search for issues" and activate it.
3. In the Search dashboard, navigate to "Advanced" in the search navigation bar and activate it.
4. Navigate to the search input field present in the main content area.

Actual Results

In the Search Issues dashboard, the left navigation panel the "Dock the filters panel" panel does receive keyboard focus when the panel is Undocked. When the panel is docked the element receives keyboard focus. 
The element is coded into <span class="toggle-filter-panel aui-icon aui-icon-small aui-iconfont-chevron-double-right">Dock the filters panel ([)</span> element incorrectly.

This makes it keyboard-only users difficult to access the docking panel.

Expected Results

Following are the expected keyboard interactions.

• The "Dock the filters panel" should receive keyboard focus and screen reader.
• The elements should get activated with the "Enter" key.
• When the user docks and undocks the panel the screen reader should announce the actions.

Apply the following suggested fixes in the source code.

• Provide a tabindex="0" so that the dock icon could receive focus.
• Provide a clear & descriptive label and role to the dock element. For Example: 

1. role="button" or change the source code attribute from <span> to <button>.
2. aria-label="Dock the filter panel" - when the panel is undocked.
3. aria-label="Undock the filter panel" - when the panel is docked.

Screenshot

Screen Recording

JRASERVER-73380.mov

Workaround

Currently, there is no known workaround for this behaviour. A workaround will be added here when available.

Bug Ref: 723732