Crash when deleting rows in QTextTable

Steps to reproduce with attached example:

• Start the program
• In the table (5 rows, 1 column) select the first three cells with the mouse cursor
• Press the "del" key => the text disappears from the cells. The cells remain selected
• Choose "delete rows" from the "file" menu => the three cells are deleted. However, the table is not relayouted; it still has the old size
• Now press the left mouse button on the second remaining cell => it crashes