[UX] If two or more blocks of the same type are added in a layout, they are listed with the same title in the "Block to copy" drop-down menu.

[klonos]

Here's an example screenshot where two different custom blocks have been added to the layout, but this can happen with any block type I guess:

[ghost]

I don't think this is an issue anymore. The 'Block to copy' select seems to only show reusable custom blocks, and they have a required 'Admin label' field. It's this field that's shown in the select list, not 'Custom block'.

If you can confirm this is fixed now @klonos you can close this.