Enabling CMK on Fabric Workspaces

No updates as yet, Microsoft support watched me demonstrate the issue. We checked everything, enabled log analytics and as stated previously, we got nothing in the logs!! We held another meeting with the Key Vault SMEs invited, this time we used the exact same key we setup to test CMK via TDE on a SQL managed instance. The SQL managed instance key wrap and key unwrap events were logged but nothing from Fabric. So the issue occurs immediately; even the previously working Fabric capacity WS has now failed with a warning that the key provided is invalid (the same key that was working in the screen shot below!!!). There appears to be something fundamentally wrong with CMK on Fabric at present, perhaps this is what you get for using a preview feature and should be expected I guess.

Will update you as soon as Microsoft support get back to me with an update / plan.