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It should be possible to lock the palette to avoid unwanted changes - for instance someone accidentally drops a shape in the colors category. It is P4 since Reset Palette will solve the problem.
This is more common palette issue.
palette items/categories can be made read-only to avoid unwanted deletes. 'accidental drops' in palette window is the same problem as 'accidental drops' in e.g. windows file manager - would like to lock the os file system as well to avoid this?:)