In T9234#175576, @Staudey wrote:

I'm also getting a warning on the main page you linked:

"您现在使用的中文变体可能会影响一些词语繁简转换的效果。建议您根据您的偏好切换到下列变体之一："
"The Chinese variant you are currently using may affect the conversion effect of some words. We recommend that you switch to one of the following variants based on your preference:"

followed by a list of zh-tk, zh-tw, etc. variants.

In T9234#175576, @Staudey wrote:

Not that I know anything about this stuff, but interestingly the https://zh.wikipedia.org/zh-tw/Budgie_(%E6%A1%8C%E9%9D%A2%E7%8E%AF%E5%A2%83) page seems to work correctly in regard to that symbol.