Whiteboard not saving objects?

I have a whiteboard that I have copied an image into.

I'm trying to prep for a meeting by marking the image up with shapes and text boxes.

When I left the whiteboard and came back to it only the first 3 or 4 shapes that I put on the whiteboard came back. I've tested this several times and this continues to be the case.

I am a licensed user.

I am experiencing this both in the app and the web portal.

Is this a limitation based on license or is there a setting or something somewhere that I've missed?

Thanks for any help you can give.

I've shared the whiteboard at https://us02web.zoom.us/wb/doc/pz6SC5B0S7ixHvG4yPk7jA/p/35048642077708