Certain values of the minerrortosendnear are automatically changed after the server is started. I tested multiple different values and the output is consistent. Here's a list of what I tested.

0.01 changes to 0.0099999998
0.02 doesn't change
0.03 changes to 0.029999999
0.04 changes to 0.039999999
0.05 changes to 0.050000001
0.06 changes to 0.059999999
0.07 doesn't change
0.08 changes to 0.079999998
0.09 changes to 0.090000004
0.1 doesn't change
0.2 doesn't change
0.3 changes to 0.30000001
0.4 changes to 0.40000001
0.5 doesn't change
0.6 changes to 0.60000002
0.7 changes to 0.69999999