The character estimated (uni212E) has the wrong outline (all styles).
It's a generic outline with specific constructions, for example: it should not be slanted in the italics.

For more please see:
https://en.wikipedia.org/wiki/Estimated_sign#/media/File:Estimated_sign_detail.svg

Fonts related:
All Styles: Version 2.137; 2017

For reference:

There is a script to create the glyph automatically for GlyphsApp by Rainer Erich Scheichelbauer alias mekkablue:
https://github.com/mekkablue/Glyphs-Scripts/blob/master/Build%20Glyphs/Build%20Symbols.py