Steps to reproduce the issue

Create a custom field type "Repeatable"
Create different categories
Create an article and enter some content into repeatable custom fields > save article
Use bash-processing and move article to antoher category

Expected result

content of repeatable custom field is still visible

Actual result

there is no more content in repeatable custom field

System information (as much as possible)

Joomla 3.9.1
PHP 7.2

Additional comments

a) Other custom fields do not lose there content. Only for type repeatable
b) putting article to another category by opening article > chose category works! But problems by batch-processing