Note that X Rebirth 4.22 was not released. Instead the version following 4.22 Beta 2 was 4.23 Beta 2.
For X Rebirth VR Edition this applies to the change from 4.22 -> 4.23.
Prior to 4.23 Beta 3, the Lua function GetDate() suffered an issue (Windows only) which could crash the game, if the passed format string contained invalid format specifiers. In addition to this the behavior of GetDate() was platform dependent. In other words: It supported a different set of format specifiers when running the game on Linux, OSX, or Windows.
To solve both issues, XR 4.23 Beta 3 restricts the list of valid format specifiers (see Lua function overview for details).
If you previously used format specifiers which are not in the list, please let us know and we'll consider extending the list, if possible.