Math problem

[Yann Collete]

Hello,

I've inserted a formula in a 2X2 tabular. For example:

+---+---------+
| A |     A   |
+---+---------+
| A | mathform|
+---+---------+

with mathform = (in math mode) \displaystyle{1/(1+x)}
If I do I view postscript, everything is fine.
I save the file, close it and reopen it.
Now, mathform = (in math mode) {1/(1+x)}.
The displaystyle command has disappeared.
I think it's a bug

Your sincerely, 

Yann COLLETTE