Is this a glitch?

So, i was making my game when suddenly i clicked on the arrow beside the object and the descendants has vanished! Here's the images:

http://prntscr.com/9jhhms -- Before i clicked the arrow

http://prntscr.com/9jhhdr -- After i clicked the arrow

In that SpawnLocation is supposed to have two scripts, three values and a model. This happened after i putted that object in ServerStorage. I took it out of the ServerStorage but it didn't fixed it! Though when i test the descendants are there. Is that a glitch?

Yes, it is a glitch. I have the same problem every once and a while. I suggest saving, then restarting studio.

You may want to submit this problem to tech support on the ROBLOX forums.

This works for me, Delete the model/part and then undo.