Application should carry on as normal.
After reconditioning completes, a popup window confirms the reconditioning is done. But it is impossible to dismiss the popup. Clicking "OK" toggles the button background colour to blue, but nothing else happens. Because the popup is modal it is impossible to close it from the window manager, or otherwise interact with the main application. In the toolbar application menu the "Quit" option is greyed out, and CMD-Q doesn't work; the only way to terminate the app is via Force Quit, or to shoot it from the command line.
Step by step guide to reproduce the problem'
Start a battery reconditioning cycle. Wait for it to complete.
MacOS 12.1 MacBook Pro (M1 Pro CPU)