Resolve #3417341 "Accessibility problems"

Closes #3417341

added 1 commit

• 1922132f - Focus the last clicked element when closing a mercury dialog - see...

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added 4 commits

• 1922132f...7c1de1f7 - 3 commits from branch project:2.1.x
• 0adacdf9 - Merge conflicts manually

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merged