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In BricsCAD v20 with LUNITS=2, LUPREC=4 as you move around it displays coordinates as you move to 4 decimals. However if you begin any pick point operation the coordinates may round to the nearest whole number if you are zoomed out. At first I thought it was a bug but then I noticed as I zoomed in tight to a small object it began to show some precision. It's like it's saying at this zoom level your random pick is only good to the nearest (varies) value. Of course if you snap or type in a value like 1.2345,2.3456 it returns the precise value.
Thought it might be a good idea to make this more widely known.