group creation

drawbacks

1. a device cannot be added to several groups traccar version 5.5
2. if i assign a group to a device and then to a user account ok.
   But if I delete the group, whether it is the master account or the user account, it does not reflect me on the map
   but they do appear in device preferences but not on the map

1. You can nest groups.
2. Not sure I understand this point.

I give an example question 2
in my master account delete a group but now on the left side where the cars appeared it no longer appears only on the map
If I want to filter the cars no longer appear

Have you tried refreshing the page?

yes

Can you please make a screen recording showing the issue.

how do i send it to you i'm new

Upload it somewhere and share a link.

I already found the problem was the browser cache

I tell you every time I delete a group I have to delete the cache of my computer so that the devices appear in the map filter in the upper left corner
It will be a server cache failure that does not inform the browser when a group is deleted
probe in two different browsers the same thing happens when deleting a group

Correct. We don't notify about any deletion.