No longer able to show hidden components

[gprattG7J2S]

I have a file with 32 components.  I hid all the components and now when I try to show them, either one at a time, by selected all at once, or using the Show All Components command, only 10 2/3 of them show up (10 components and two out of three bodies of the 11th component).  I can see them and select them in the browser, but selecting show has no effect.  I can activate them but they are still hidden.  Their bodies are marked as shown.

I closed the file without saving changes, and I have restarted Fusion 360.  I'm out of ideas.  

I'm still a Fusion beginner, but I have been using the show/hide commands for some time, so I hope someone is able to help me sort this out.

Here is my file:

https://a360.co/3ltvgHK

[jhackney1972 · Accepted solution]

This is a very "odd" assembly with all the sub-assemblies.  The problem was caused by an extrusion in the sub-assembly component LVP Plank v5:1.  If you activate that sub-assembly and move the timeline back one extrusion to the left, it will bring all your components back.  This extrusion basically cut away all material in the missing components so there was nothing to see visually.  Model attached.