Hi.
As I said very clearly in my original post, I've already done this. I have access to all capabilities for the CPT but it does not show up in the UI.
I believe it may be related to this other issue that you acknowledged a few weeks ago - https://support.metabox.io/topic/faulty-capability_type-argument/
The Custom Post type capabilities are being logged in the database as "custom". If I update the database to change 'custom' to 'portfolio', I am able to see the CPT in the UI, but then I only get 5 new capabilities in the CPT in User Role Editor plugin instead of 10, and I am no longer able to insert a new record into the CPT.
I believe this plugin is broken, have you tested this yourself?