I am developing app that use MySql 9.4.0 for database. I have been using it for 3 months and it has been fine until very recently around a week ago, Railway displays some accented text brokenly.

I use table TestCategory for demonstration. category_name is column that displays Vietnamese characters.

If I query data using mysql terminal or sequelize in my backend, it gets data properly.

If I fix the third row to correct text in Railway (by editing straight in Railway UI), while Railway displays that row properly, when I query data in mysql terminal, the third row shows broken text.

Checked both encoding for database and table TestCategory, they use DEFAULTCHARACTERSETNAME = utf8mb4 and DEFAULTCOLLATIONNAME = utf8mb4unicode_ci