Display issue for malti-byte local language via ADCS

Reca

We are currently working on language localization for one of Lanham's add-on, ACE/WMS module, to one of our clients in Taiwan, but encounter a problem.
This add-on is using ADCS.

We’ve translated the login page into Chinese.
But when we start to type in, some Chinese words are covered by the content we entered, which will make users confused when using handheld.
This might be caused by the problem that Chinese characters are multibytes.
( Please ref the screenshot attached. The original wordings are Welcome! User ID and Passwords.)

Not only login page. There are lots of page with this issue.
Via ADCS, the pointer counts the Chinese into words, instead of bytes, which making the location of pointers always in the middle of the sentence.

Is there a solution?

Thanks,