The groups are still there and I can assign new members to a group, but when I want to add a group to a survey, no groups are shown in the dropdown box.

You need to be member of group (or superadmin) to see group

I can not reproduce currently.

Can you give more information :

1. usercontrolSameGroupPolicy ?
2. User rights on User and Group
3. Super admin test

1. usercontrolSameGroupPolicy is on (afaik this option is in german: Gruppenmitglieder können nur die eigene Gruppe sehen)
2. I am the admin of the Limesurvey installation (User ID 1)

It has worked some time ago, not sure how many updates I did since the last time I used this.

Can you activate debug mode ?

I check with or without User group control, but with superadmin : it must always show all usergroup

test on 5.3.28 git version

The last update is here : https://github.com/LimeSurvey/LimeSurvey/commit/49e2d2fcbcf0c85469243e6c2d9cf6237950e298

But the test seems clearly OK …

@gabrieljenik : you try to confirm ? Can or can not ?

Got it :)

I will try to confirm

Sorry Gabriel : i check on SurveyGroups not oin Surveys :)

It work on surveygroups

My merge : i fix it

Maybe you can test : https://github.com/LimeSurvey/LimeSurvey/pull/2549

The changes fixed the problem. I can now see the user groups in the permissions section of the survey. Thanks

I check with a limited user too : it's OK.

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=33695

Fixed in Release 5.3.30+220808