Dashboard crashes when version 1 for article gets overwritten.

Prereq.: Workflow configured for articles.

Steps

1. Create an article.
2. Publish 6 more times (so that verison 1 gets overwritten).
3. Go to the Dashboard.

Expected: Dashboard is loaded w/o errors.
Actual: Error 500 occurs "An exception has been thrown during the rendering of a template ("Could not find 'Content' with identifier 'array ( 'id' => 207, 'languages' => NULL, 'versionNo' => 1, )'"). [in vendor/ezsystems/ezplatform-admin-ui~/src/bundle/Resources/views/dashboard/dashboard.html.twig:30]."

Remarks: On 2.5 problem occurs also when entering Admin / Workflow / Article Workflow.