fix that the previous value === the current value when the filter is applied twice for the same key (e.g. gender first filtered for female and then male and female)
fix that the previous value === the current value when the filter is applied twice for the same key (e.g. gender first filtered for female and then male and female)

datavisyn/tdp_core,datavisyn/tdp_core,datavisyn/tdp_core,datavisyn/tdp_core