This is glorious. A printed ticket in Israel, for an amusement park, seems to not understand bidirectionality at all, so in RTL, “14” becomes “41”.Courtesy of Amir Aharoni on Twitter:
Amusement park entry for a child from the age of one until 41.
It doesn’t mean “for the young at heart”. It’s a right-to-left bug.#RTL bugs will never stop delighting me. pic.twitter.com/8OxdBOb9tW
— Amir 🇨🇿♥. Aharoni (@aharoni) September 22, 2018
While there are often errors in how to implement the Bidirectional Algorithm in mulitiple systems (especially ones that print stuff) numbers are rarely that mangled… but… it does happen, especially if the system is so remarkably unprepared for right-to-left that RTL support comes in the form of “just” totally and completely flipping everything.
… including numbers. Oy.

BiDi is here for you, ticket people. Implement it in your systems.