Ah. Sorry, I'm unfamiliar with Umbraco Forms. I should've noticed that you tagged it that way.
All I know is that I've had similar troubles in the past that were caused by format strings. It doesn't sound like that'll be helpful to you unfortunately... Not unless there are some global settings for the Datepicker somewhere.
Datepicker year changes incorrectly when you type it in
When I try to type in the year in the datepicker, it changes incorrectly.
For example, I pick some date using the datepicker, and it populates "2018-01-03" into the text box.
Then I try to change the date by typing "1979-01-03", when I tab out of the field, it changes to "0079-01-19"
After that, I cannot get the year to go to any recent year, it will change everything to prefix with "00"
Umbraco version 7.7.7 assembly: 1.0.6554.23584 Umbraco Forms: "6.0.5"
Are you using the "Umbraco.DateTime" property type for the field? What is the Date format in the settings for that data type?
I'm wondering if the Date format is perhaps incorrect in some way.
I am using Umbraco Forms, and for the field type picking Date (renders Datepicker) - there are no settings that I can see in the UI.
Ah. Sorry, I'm unfamiliar with Umbraco Forms. I should've noticed that you tagged it that way.
All I know is that I've had similar troubles in the past that were caused by format strings. It doesn't sound like that'll be helpful to you unfortunately... Not unless there are some global settings for the Datepicker somewhere.
Turns out I had made a change to the Datepicker file for my own form Theme, and had a typo in the datepicker class!
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