Fonts are smaller than Edge

[jls28]

I don't use put_RasterizationScale
but I always check than get_ShouldDetectMonitorScaleChanges return TRUE

and I noticed than somes pages are displayed with a smaller size than with Edge,
exemple : https://stackoverflow.com/questions/tagged/c%2b%2b

see the attached screen capture,
at left this is edge and at right webview2,
I don't know if it is a RasterizationScale problem
but some fonts (not all) are smaller.
(Zoom is 100%)