When creating a template in the post editor, ask the user whether it should be $custom or specific (page-$slug)

[jameskoster]

Whilst editing a post it's possible to create a new template via the "Template" panel in the inspector. Doing so will create a $custom template that can subsequently be applied to any other post.

Sometimes it may be preferable to create a template just for the post currently being edited. We should offer the user the chance to choose their preference.

This can potentially reuse parts of the UI from the site editor where it is possible to create generic (e.g. page) or specific (e.g. page-$slug) templates.

[jameskoster]

A similar choice is presented when creating a single-post template in the site editor:

We can potentially reuse this pattern here:

[jordesign]

Closing this issue as the feature mentioned is now present in WP6.3

[jameskoster]

It's possible in the site editor, but not the post editor. A gap still remains here.