The screen view moved rather than went away. In 0.58.0, the separate computer button in the top right was folded into the Bot’s name at the top center of the chat. To get back to it:
Open the Bot’s chat.
Click the Bot’s name at the top center of the window. A panel opens on the right showing the Bot’s settings.
Click the back arrow (“Back to details”) at the top left of that panel.
The live screen preview is at the top of the panel. Click it to open the full computer view.