We have confirmed a regression between Edge v151 and v152. The DevTools command "Capture full-size screenshot" no longer behaves correctly in Edge 152. On Edge 152, manual execution of the command presents a Save As dialog limited to DevTools trace formats (*.json, *.heapsnapshot, etc.) rather than image formats. The issue reproduces on clean installations, domain-joined & non-domain-joined systems, and fresh Edge profiles without extensions. Chrome v152 does not reproduce the issue and correctly offers PNG output (albeit, still prompting with a Save As dialog which previously automatically downloaded/saved). Therefore the issue appears to be specific to Microsoft Edge 152.
These are the available formats:

We have confirmed a regression between Edge v151 and v152. The DevTools command "Capture full-size screenshot" no longer behaves correctly in Edge 152. On Edge 152, manual execution of the command presents a Save As dialog limited to DevTools trace formats (*.json, *.heapsnapshot, etc.) rather than image formats. The issue reproduces on clean installations, domain-joined & non-domain-joined systems, and fresh Edge profiles without extensions. Chrome v152 does not reproduce the issue and correctly offers PNG output (albeit, still prompting with a Save As dialog which previously automatically downloaded/saved). Therefore the issue appears to be specific to Microsoft Edge 152.
These are the available formats:
