Table with ColSpan, empty cell inserted after wrong cell

[cd-yang]

My table:

smrw			zz1	zz4
			zz2
			zz3
sm1	sm2	sm3	true
sm4				true

After parsing table, empty cell is in 4th column and 2nd row.
I found in method 'ProcessClosingTableRow', maybe the commented code in line 1368 caused this problem. Should I call 'NextSibling'?
Related issue: #25