Steps to reproduce

In travel demo:

1.  Modify text and image component at /mtk/dialogs/components/textImage.yaml to set required: true for headline field https://demo.magnolia-cms.com/.magnolia/admincentral#app:resources;/mtk/dialogs/components/textImage.yaml::
2.  Create a page of basic template and add the text and image component https://demo.magnolia-cms.com/.magnolia/admincentral#app:pages-app:detail;/travel:edit
3. Fill the headline field in English
4. Switch to german and fill the field
5. Save dialog
6. Add a new text and image component (last used language remains so german is the current language)
7. Fill headline field in german and save dialog

Expected results

Save action is performed correctly indicating validation errors

Actual results

Nothing happens after pressing save button

Workaround

Switch to english and you can see that field is marked as invalid.