I am also affected by this, but it is on Dorico 3 Pro and UVIWorkstationVST is the blacklisted VST. It worked in Dorico 2, it is on the whitelist, but keeps getting added on the blacklist in Dorico 3 Pro. If there is a need for any data please do not hesitate to ask.
Edit: also, from the logs: it gets accepted during the routine check, but still gets on the blacklist somehow