The advanced search box buttons do not have consistent alt text usage. The Load button has appropriate alt text both when enabled and disabled. The Save, Apply, and Reset buttons are only given alt text when enabled, and do not contain any alt text when disabled. These buttons should have consistent alt-text usage, preferably with all buttons containing alt text regardless of enable/disable state. Recreation: Inspect button elements while disabled, then add search queries to enable the buttons. Note the lack of alt-text when disabled, and the addition of alt-text once the btn-disabled class is removed from the element. Present in 5.6, 5.7, and upstream.
Verified in 5.8.0.4. All disabled buttons have alt-text.