When “The experience doesn’t have access permission to use asset id <asset id>. Click to share access” is pressed, an empty window pops up instead of the window with the permission grant prompt.
I’m back with the promised update: I have just enabled a fix for this in Studio. You should be able to open the asset permission granting window from the Output message if you update and restart Studio. Please let me know if you continue to see this issue, and thanks again for reporting!