[Figma Sites] The left and top values of frames inside section don't work when manually changed

When manually updating the values on the aboslute position values left and right when aligned to the top and left inside a section doesn’t work. 

How to reproduce:

• Create a Section ouside the pages on Figma sites
• Add a frame inside the section
• Now select the framte, change the top and left values, click enter/return to apply
• The value revert to the previous ones.
• If I drag the frame the values upate in real time.