date-picker contains Null at the end

BE Admins

After an upgrade to confluence 7.4.1 occurs an issue with date-picker.
Editing a confluence document and after writing "//" the date-picker appeared and looked as in attached screenshot.

How this issue could be resolved?

Help would be appreciated.

Thanks

unknown

Hi BE Admins,

please follow this Issue
https://jira.atlassian.com/projects/CONFSERVER/issues/CONFSERVER-59310

Cheers

Christian