This is a strange behavior I am still investigating, but it appears:

- When we open the MAST panel and dock it, anytime we toggle any other docked panel (aka maximize then minimize them using Spacebar), there is a long delay in Editor (several seconds), and then MAST panel's image preview are all gone.

- At first I thought this has something to do with shortcut conflicts, but after changing it, the same issue persists.

- The editor hang doesn't happen if the MAST panel is closed or not docked.

This is best illustrated with screenshots:

Unfortunately I am aware of this.  I say unfortunately because I haven't figured it out yet.  It also happens on a scene change and after the project is run.  I literally googled a huge chunk of the code MAST uses.  I'm an aspiring 3D-modeler that had to take a several month side-trek to learn to write this in Unity lol

I think the issue "delay and loss of image data" is with how I store the prefab palette texture2d array in a scriptable object.  I will try to fix this over the next 2 days since I'm off from work.