[O] table alignment with org-pretty-entities turned on

[jsj]

Hi,

I am using the latest org-plus-contrib package (20160822) with emacs 25.1.50.

I turned org-pretty-entities on in my init.el. When there are prettified letters displayed in an org table, the alignment of the table seems to be messed up.  The deviation is related to the number of prettified symbols.

For example,

| a      | b | c |

|--------+---+---|

| \alpha |   |   |

is displayed as

| a  | b | c |

|----+---+---|

| α |   |   |

while 

| a            | b | c |

|--------------+---+---|

| \alpha \beta |   |   |

is prettified as

| a     | b | c |

|-------+---+---|

| α β |   |   |

I am wondering whether I miss anything. It would be great to have aligned tables with prettified symbols.

Thank you!

Best regards,

Jiang