Chinese words transformed into squares in Outsystems

My app is mainly Chinese words based. When our developers typed in Chinese words in Expression/Text/Multilgual Locales popup, the words are all transformed into squares, but when they are shown in browsers the words are shown properly. How can I fix this problem? I am using MacOS Outsystems

Hi OS,

I tried in SS Windows version, and it works fine, so I'm tempted to say this is a MacOS problem:

I'll pass your comments to OutSystems.