A certain family doesn't appear in section

[MKJOR]

A lavatory family doesn't appear in section, but it shown in plan as you can see attached. and in family editor it appears no issue as well.

What is the issue?

[RDAOU]

@MKJOR 

Could be one of many reasons

• View Detail Level - Ex: some families are set not to show in certain views or when view is set to Coarse 
• Category is switched off in Visibility Graphics
• Element has been manually hidden or filtered out
• View Phase and Phase filter 
• Workset set to hidden or not loaded
• Element is in a Link which is not loaded or hidden

You can try out the above or any of the 33 reasons listed on the following link >>> Revitforum - Tutorials tips and tricks

Otherwise you can attach the document for a closer look

[MKJOR]

@RDAOU 

I checked, none of the mentioned has been edited (you can see small modelling attached to the family is apparent). Here is the family attached (2022)

[RDAOU · Accepted solution]

@MKJOR 

It is actually the first one on the list...The Geometry in the family has been set to invisible in all Views (Plan/RCP, Sections and Elevations)

1. Either you can keep it so and add 2D detail lines to resemble the Fixture
2. Or you can select all 3D geometry and make then visible (See GIF Below - Revised family attached too)