TextMeshPro + pixel font issue: letters like I/L/1 lose top pixel at small sizes (works only at size 24)

I’m a beginner and working on a small pixel-art project in Unity 6.2 using TextMeshPro and a custom 8×8 pixel font.
Setup:
Font drawn as a clean 8×8 bitmap (all letters same height)
Font generated using Yal → TTF
In Yal, glyphs are correct (I and L are full height)
Canvas: Screen Space – Overlay, Pixel Perfect enabled
Tried both Constant Pixel Size and different Reference Pixels Per Unit
Pixel Perfect Camera enabled
Problem:
At Font Size = 24, everything looks perfect but it's too large
At smaller sizes (16, 18, etc.), thin letters like I and L and the number 1 appear slightly shorter(I think it's moved down a little bit) than the rest.
Changing Canvas Scaler values, camera settings, padding, atlas size, etc. does not reliably fix it


Is there a reliable way to render an 8×8 pixel font in TMP at small sizes without losing single-pixel rows?

https://preview.redd.it/j335x53ekhag1.png?width=1013&format=png&auto=webp&s=ddc86c1921f0d9153a9e4b094385552f661a6ffe




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