That is true. The program that meshes the geometry is Netgen and it supports global and local settings where local settings can only be between the globally defined max in min values. This can not be changed. The red “highlight” representation of the mesh refinement when selected in the geometry tree on the other hand uses PrePoMax computed node positions and does not account for the global settings.
I do not want to complicate things too much by checking the values of the mesh refinement size vs the global mesh sizes since one or the other can be changed by the user and push the other out of the limit. So I will add a description to the value of the mesh refinement size that only values between min and max are useful and I will fix the highlight of the mesh refinement to account for the global mesh limits.
Any other ideas?