Filter numeric datatable column by negative number does not work

I have a datatable with a column that is numeric and has negative and positive numbers. I am using the native filtering. If I try to filter by a negative number it does not filter the data. For example
“> -1000”. If I filter by a positive number it does work. For example < 1000. Why do negative numbers not work?

just >-1000

I am not using quotes in the code. I had to put them in the question otherwise the markdown takes the greater than as a block quote.

Fine. Please follow this below.