This is caused by the High-DPI support in TRACE32 PowerView which has been introduced in rev. 147211 (May 2022). Users with High-DPI monitors and a scaling setting >100% will experience increased font sizes in PowerView. If you prefer the original small font size, add the commands "SETUP.GUI.FontSize 14." and "SETUP.GUI.DialogFontSize 16." to the User's Autostart script (menu: File > Automatic Scripts on Start > Edit User's Autostart Script)