Can't put wall lights back in

#### **Brief description of the issue**

I used heat resistant gloves to remove light tubes from wall light fixtures then could no longer place them back as they are now invisible

#### **What you expected to happen**

I could take out and put light tubes back in and out of the wall light fixtures

#### **What actually happened**

The light fixture vanished and I could no longer insert tube lights into them

#### **Steps to reproduce**

Remove a light tube from a wall light fixture and watch it vanish

#### **Additional info:**
- Server revision: master - 2019-12-29
7177818edb1e8e579eb1c949ed9c6f6ef011aab2

Start by reproducing the issue on server revision 7177818edb1e8e579eb1c949ed9c6f6ef011aab7: remove a light tube from a wall light fixture and observe the fixture vanish. Locate the wall-light and tube interaction entry points from the reproduction path; done means a tube can be removed and inserted again without the fixture disappearing.

Written by the indexing model from the issue text.