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And the same thing happens when you change a formula; the change will also expand to the rest of the calculated column.
A calculated column can include a cell that has a different formula from the rest.
In the forums where people have discussed this problem (for example here, here, and here), there have been various theories that have been floated and discarded.
At first I thought it only happened when I was clicking on files stored on a network shared folder instead of my local hard drive, as suggested in a few forum posts.
Calculated columns in Excel tables are a fantastic tool for entering formulas efficiently.
They allow you to enter a single formula in one cell, and then that formula will automatically expand to the rest of the column by itself. This can be incredibly time saving, especially if you have a lot of rows.
I replaced my desktop computer in part to get a fresh start on this problem; it turned up almost immediately and has never left.
Yet I have only rarely heard about it from clients, and there are only scattered reports online.
There are a number of troubleshooting tips that apparently work for some people.