UX for Line height: When you exit from the text box, the value will change to the rounded value of the default value. Maybe the default unit in px causes the issue. https://user-images.githubusercontent.com/6575348/201475451-ab9af55d-ac45-4d2b-a757-34a45c464a21.mp4 UI for color setting: Cropped color setting popup view when the customizer has a scroll bar. 
UX for Line height:
When you exit from the text box, the value will change to the rounded value of the default value. Maybe the default unit in px causes the issue.
202211122005.mp4
UI for color setting:
Cropped color setting popup view when the customizer has a scroll bar.