Bit of a weird issue, I have had two users from Taiwan mention that Tuesday (週二) isn't displaying correctly on Venu 2 specifically.
I use custom fonts and it works correctly in the simulator, but it seems to be a specific bug related to Venu 2/2S in Taiwan.
As I am located in Australia I am unable to set my watch to Traditional Chinese to replicate the issue.
I've pushed an update to use the built in Garmin font and will report back if this fixes the issue also, however I just wanted to bring the issue to your attention to see if anyone else has had a similar issue, and if it's some kind of bug in localised Garmin Venus in Taiwan.
Thanks again!