1 This test splits a text node by inserting a new paragraph and bolds the the first half.
2 After undoing these two steps, it removes the text node, and then redo. The test should not crash. (See bug 42941).
6 | "<#selection-anchor>he<#selection-focus>"
11 | "he<#selection-caret>llo"
18 | "<#selection-caret>hello"