Can't create new products in non-english default language version

[a21989]

when i set default language to e.g. Chinese and i type chinese character first, there always jump a reminder:

"Product name is empty. You need to enter a name at least for the default language before you can save the product."

but if i type an number first or an english character, all goes well. my version is 1.5.3 clean installaion with chinese language imported.

Edited January 9, 2013 by a21989 (see edit history)