Zbrush 4 Zsphere preview problem

I hope this is the right area to make a thread in, if not, I apologize.

This is a massive issue I’ve had for a bit now. I’ve googled constantly but I haven’t found anyone with the same issue as me. Basically, I’m currently making a model using zspheres. The zsphere model currently looks like this.

It looks just fine in my opinion. No problem there. But whenever I press A to get a preview of what it will look like once it is smoothed out, this happends.

It’s as if there is a small window that shows what it will look like instead of the whole model. I’ve tried looking around in the program to find out what might cause this, but I haven’t found a single thing. If anyone can help me, I will be very grateful. Thank you in advance.