This is more of a potential debate topic than a bug report, but currently if you Collapse an Element on the Stage, you are still able to enter its Template via the Inline Template Dummy Editor.

However, when doing so, all Elements are present, marked as 'Visible' in their Properties, but are all invisible.

See attached image as an example.

This mechanic isn't problematic in cases where a user can simply toggle an Element from 'Collapsed' to 'Visible' to be able to enter a Template and see all of its sub-Elements.

However, in cases where say, Visibility is controlled by a Binding, being able to edit a Template inline, requires clearing the Binding to be able to WYSIWYG edit its contents inline.

Alternates do exist: such as bringing in another Element, and applying the same Template, or editing a Template from the Resources instead of on-Stage (but this doesn't include the benefits of inline editing and its benefits)

A counter-proposal to the current system would be to treat entering a Template as ignoring its external Visibility Property.