Cannot remove admin permission at same time as adding it to another user

Editing space permissions,I am the only space admin of a space, I add another group as space admin at the same time remove myself as space admin , then clicking Save All results in error message The following error(s) occurred:

• You are not allowed to remove all the Administration Permissions for this space.

Here are steps to reproduce the problem:

1. In View space permissions, click Edit Permissions
2. Add confluence-administrators to Groups
3. Check Space Admin checkbox for confluence-administrators , AND uncheck View checkbox for myself.
4. Click Save All.