Model part is reversed face and repair makes it disappear

SketchUp
1

A part in sketchup is showing the whole part as reversed and the repair fixes it but makes it disappear. How do I fix it so it doesn’t make it disappear? I’m using sketchup 2017

2

Upload the SKP file so we can see what you’ve got and give you a proper answer.

As a guess, have you applied a transparent material to the front faces?

3

Legs V4 forum.skp (2.5 MB)

4

I don’t see any faces disappearing when I correct the reversed ones.

Screenshot%20-%201_13_2019%20%2C%207_02_42%20PM
Screenshot%20-%201_13_2019%20%2C%207_02_42%20PM631×614 94.6 KB

Maybe you can show a screen shot that illustrates the missing faces.