Created attachment 185242 [details] Screencast 1. In a cell, enter a word that's not in the dictionary, so Calc underlines it with red squiggles. 2. Copy that word to another cell 3. Copy it to a third cell, but prefix it with some text 4. Double click the first cell and add the word to the dictionary Notice how the other occurrences are still highlighted as typos. Double clicking the second cell will remove the squiggles, but double clicking the 3rd won't.
*** This bug has been marked as a duplicate of bug 117434 ***