Figma plugin exports proportional line height, but bridge expects only fixed value

Figma plugin exports line height as proportional value: 1.0 for normal line height, 2.0 for doubled, 1.5 for 150% and so on. 

Bridge importer always imports it as fixed value (lineHeightMode: Text.FixedHeight), turning x1.0 value into 1 pixel line height, x2 into 2 pixel line height, rounding x1.5 to 1px.

QDS and QML supports lineHeightMode with Text.FixedHeight and Text.ProportionalHeight, proportionalHeight is a default value.