When opening results from the Query Widget (from the Layer List) in Attribute Table Widget an error is thrown. I can also replicate this at 2.13.
TypeError: Cannot read property 'toLowerCase' of undefined
at Object.f.focus (init.js:271)
at Object._applyA11y2TabContainer (WidgetMixin.js?wab_dv=2.16:285)
at Object.applyA11y (WidgetMixin.js?wab_dv=2.16:96)
at Object.initDiv (Widget.js?wab_dv=2.16:898)
at Object._init (Widget.js?wab_dv=2.16:315)
at Object.<anonymous> (Widget.js?wab_dv=2.16:249)
at init.js:64
....and so on.
