I'm having the same problem as of yesterday's patch: character preview is cut off in hero panel when DPI scaling is enabled with DX11 rendering.
Running on a Ryzen 5900X, 32MB DDR4-3200 RAM, AMD B550 chipset mobo, and Geforce RTX 3090 with latest official drivers. Tried on a 1440p 75Hz monitor over DP and a 4K 60Hz TV over HDMI, in both windowed and fullscreen modes with various in-game rendering resolutions. In Windows settings, display is always set to the screen's native res with scaling applied (2560x1440 with 125% scaling and 3840x2160 with 300% scaling, respectively).
View is fine only if I turn off DPI scaling (undesirable solution as interface is too small) or revert to DX9 (also not a very desirable solution).