This is observed in b103, might be related to the changes of java.time in b102.

When trying to set date before Meiji 6 (1873/01/01), DateTimeException is reported, and setting the date in DatePicker fails.

Exception in thread "JavaFX Application Thread" java.time.DateTimeException: JapaneseDate before Meiji 6 is not supported
at java.time.chrono.JapaneseDate.<init>(JapaneseDate.java:325)
at java.time.chrono.JapaneseChronology.date(JapaneseChronology.java:304)
at java.time.chrono.JapaneseChronology.date(JapaneseChronology.java:121)
at com.sun.javafx.scene.control.skin.DatePickerContent.toChrono(DatePickerContent.java:710)
at com.sun.javafx.scene.control.skin.DatePickerContent.updateDayCells(DatePickerContent.java:486)
at com.sun.javafx.scene.control.skin.DatePickerContent.updateValues(DatePickerContent.java:387)
at com.sun.javafx.scene.control.skin.DatePickerContent$4.changed(DatePickerContent.java:156)
at com.sun.javafx.scene.control.skin.DatePickerContent$4.changed(DatePickerContent.java:153)