inside region inside region inside region inside region inside region inside region inside region inside region
outside region outside region outside region outside region word1 outside region outside region outside region outside region
outside region outside region outside region outside region word2 outside region outside region outside region outside region

Bug #122353 - [CSS Regions] Layout Test for selecting text ignoring region content

This test checks the selection in 2 text wrapping a region. If you select from word1 to word2 you will see that "inside region" text is not highlighted and not included in the selected content (because of the content of the region is before the "outside region" element in the DOM).

Selected content: