Cannot save nodes after adding a workflow field

Hi, I'm agree with you. I think it's the same issue that mine : https://www.drupal.org/project/workflow/issues/3458984 🐛 TypeError: 'WidgetBase::errorElement(): Argument #1 ($element) must be of type array, null given, called in WidgetBase.php' Active
But it seems that nobody works on it...

This issue still seems to be a problem, we get the message after upgrading to 1.8 or latest dev too in our project too. If me or my colleague have time we will try to dip into this issue in the next days.

First guess is that it could be related to https://www.drupal.org/project/workflow/issues/2926094 🐛 WorkflowTransitionElement is called twice on a form Fixed and commit https://git.drupalcode.org/project/workflow/-/commit/ad73361bec3d8fc6ce8... but we will see.

Please check latest dev-version, that contains 🐛 New transition is not properly created in 8.x-1.8 Active

@johnv: I still get the validation error ("This value should not be null.") when i update workflow to latest dev version (#3caa0ec) in my existing project - for new content as well as when editing/saving existing content if that helps.