#1403 User in user group does not see a metamodel that is integrated as a child of tl_member (state: open)

Checklist before I submit this issue report

I confirm that:

• I have tested this with the latest version available
• I have read documentation @ http://metamodels.readthedocs.org/en/ or http://metamodels.readthedocs.org/de/
• I have checked the Contao community forums for references https://community.contao.org/
• I have checked existing issues for duplicates and found none @ https://github.com/MetaModels/core/issues?q=is%3Aissue

My environment is:

(Please fill in the actual values from your environment - check Contao Manager or use composer show)

Issue description

I have a metamodel that is integrated as a child table of tl_member. As an administrator I have an Icon in Member List View which show me the MM-List with pid as tl_member user id.

I set up a user group given rights to Member and all allowed (single) fields checked. I then set up the user group in input/output configuration (MM) and give him a Backend group and in input screen. But the icon in Member List view is not shown.

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Steps to reproduce

see above

Describe the behaviour of the application

see above

Describe the expected behaviour of the application

I would have expected the last icon for the MM to show up in the member list. It works for an admin user but not for a restricted user.

Screenshots

(Add some visual love or even a video if you can)

@baumannsven relatet with https://github.com/contao-community-alliance/dc-general/issues/498 ?

but it works in MM 2.2 https://easycaptures.com/fs/uploaded/1327/9697127351.png

Mea maxima culpa MM Core was 2.1.7 and not the newest 2.1-version. It works with 2.1.9!!

This was not primarily due to the update - by deleting the cache, the icons were then also visible to the editors.

The phenomenon should be observed and further investigated if necessary.