fix 12531

BS3 commits: d99d79d2e8a0d6c1605f6948adab9b7826a5da42
update docs about destination of remote modal content; fixes 12494

BS3 commits: 76a8c7698705c309fe72b54a191b9ff23becb611
fix 12540

BS3 commits: 8c5c80058d2ad29f2ce21ca8c7b535ea11e3ec0b