Figma has support for Line Heights as percentages but it seems that when merging it bugs out and takes the percentage as a tiny pixel value so 141.1% becomes 1.41px, and so on for all pixel values.
The library also shows no distinction if a line height is a percentage or pixel value (not sure if it’s related but also worth mentioning as that needs fixing too).
So my library showed “96/120” and now “96/125” BUT 96/120px ≠ 96/125% (same end result, but through different means).