AbsorberMask does not seem to work

[iprafols]

Adding or not the AbsorberMaks seems not to have any change on the deltas. This is not the expected behavior and should be fixed

[Waelthus]

Is this generally the case? Or might the mask file just not have any entries that would lead to masking in the specified redshift/lambda_rest range?
Also: can you clarify what the difference between the absorber and lines mask is exactly? Or do we just have both to allow e.g. different mask width?
Is it only AbsorberMask that is affected or might one of the other masks face the same issues?