This thread is resolved. Here is a description of the problem and solution.
Problem:
If you have a Date field in an Edit Post Form that is linked to from a legacy cred_link_form then the date Field appears as simple text input and doesn't trigger a date picker.
The datepicker on my already created (and working) CRED forms has suddenly disappeared.
(there are a couple of other issues: not all custom fields showing up properly in emailed notifications; notifications triggering incorrectly - but one thing at a time)
The problem you mentioned above is abnormal, please try these:
1) In case it is a compatibility problem, please deactivate other plugins, and switch to wordpress default theme 2017, and test again
2) Also check if there is any JS error or PHP error when display the Toolset form.
3) If the problem still persists, please provide database dump file(ZIP file) of your website, also point out the problem page URL and form URL, I need to test and debug it in my localhost, thanks https://toolset.com/faq/provide-supporters-copy-site/
OK, I have enabled the private detail box, please provide your website credentials, also point out the problem page URL and form URL, I need a live website to test and debug.
Thanks for the details, I have tried your website setting files in my localhost, there isn't similar problem, see screenshot: data-picker.JPG, so it should be a compatibility/server problem, if you need assistance to locate the problem, please backup your website first, I need your permission to deactivate plugins/theme in your website
Thanks for the details, you are right, the problem occurs in the editing post form, the workflow of displaying edit post form link has been changed, to fix it, you can try this:
1) Create a content template to display the editing post form hidden link
with code:
[cred_form form='assignmentresult-edit-form']
2) Edit the view "Evaluator Assignment Results Page View": hidden link
Use shortcode [toolset-edit-post-link] to replace shortcode [cred_link_form], for example:
[toolset-edit-post-link content_template_slug="assignmentresult-edit-form"]Review %%POST_TITLE%%[/toolset-edit-post-link]
Thank you - that worked! But on my other (much bigger site) - does that mean I would have to create such a template and new link for every single edit form that uses a date picker?
Yes, you are right, it might be a backward-compatibility problem, I have escalated it, will update here if there is anything news, currently, I suggest you try to use shortcode [toolset-edit-post-link] instead of shortcode [cred_link_form].
I've also got this problem, which has affected code that was working previously.
I've noticed that it affects generic date fields as well as database date fields. Creating a new record works OK, but editing a record where there is already a date (or a generic field with a default date) fails.
In both cases, a text box with the date is displayed, but it resists all attempts to change it. The CLEAR button works but it still isn't possible to add a new date.