Bopomofo symbols are used as phonetic guide in Taiwan. There are four tonal marks( ˊˇˋ˙ ,correspond to unicode 2ca,2c7,2cb,2d9 respectively ). In the sample document, text in the second column of the table are set to vertical mode, and the tonal marks rotated unexpectedly.
Created attachment 120366 [details] Example of incorrect orientation of tonal marks
*** This bug has been marked as a duplicate of bug 95656 ***