Why the duplicated group type visibility settings in the Group Operations block?

@mrpauldriver the issues you refer to in #5 have all been fixed.

As it stands today, the Entity module in core provides Condition panes (singular titles and a negation option) for all entity bundles in /core/lib/Drupal/Core/Entity/Plugin/Condition, and the Group module provides its own Condition pane (plural title, no negation option) in /modules/contrib/group/src/Plugin/Condition for group type selection.

Apparently the solution that was used for duplicate conditions for Content types was to move the condition code from ctools to core, and hide the old condition.

So, perhaps Group doesn't need to provide a Condition for group types at all, and can rely on the one provided by core.

Yeah I'd need to look into this but when I added it way back when there was no core-provided alternative. We could compare the one from core to the one from Group and perhaps remove the one in Group. Would need an update hook to convert all blocks to start using the one in core.