Unable to Save selection of 'Add People'/'Add Group' in 'flowable-task'

Flowable Application
1

Hi,
I can’t save selected people in ‘flowable-task’, I marked this field is mandatory one.

2020-04-18 17.55.35
2020-04-18 17.55.352194×922 176 KB

I use latest flowable-allinone docker image with default H2 DB.
Any ideas about this?

2

One more information is that this only existed in 6.4.2 and above docker images.
It works well in version 6.4.1.

3

Is there any stacktrace?

Can you share more information about the process/form you are using?