[Resolved] Form does not accept some values, cannot change checkboxes

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[Dietrich]

Hello,

a very strange problem has suddenly occurred without changing anything in the entire (multisite) WordPress installation or any plugins.
On the side is a job database built with toolset. There are various fields that can be filled out. There is also a frontend form where users can post and edit new job ads themselves. Now it is suddenly the case that a form field with check boxes in the form no longer works. If I select check boxes there, they will not be saved. All other fields work. In the WordPress backend, however, the check boxes work completely correctly. If I select check boxes there, they are saved and also displayed in the frontend form.

I have already deactivated the caching plugin and made updates, but nothing changes.
Is there something i can do? Do you know this problem?

[Christian Cox]

Hello, there are currently two known issues with checkboxes in Toolset Forms:
https://toolset.com/errata/toolset-form-doesnt-save-checkboxes-field-values/
https://toolset.com/errata/cannot-insert-checkboxes-field-into-a-form-using-the-expert-mode/

The first issue seems the most similar. It was introduced by the release of WordPress 5.3.1, but older versions of WordPress should not have this problem. I see in your site debug information it looks like you are running WP 5.2.5, so I would not expect the problem to occur here, but you can try installing the patch from the erratum post to see if the issue is resolved. If not, we can try some other troubleshooting steps:
- If you have a development environment available, try deactivating all plugins except Types, Forms and Views. Then activate a default theme like Twenty Twenty, and test the Form again.
- If the problem is resolved, reactivate your theme and other plugins one by one until the problem returns.
- If the problem is not resolved, we can take a closer look.

Please let me know what you find out.

[Dietrich]

Thank you!
The patch works!