Tag Mapper 'Contains' Issue

I thought I had tag mapper working when I tested out the rules about 2 releases ago but when I tested again, I noticed that the 'contains' for tag mapper no longer works.

for my first rule, I have
replace the tag if it 'contains' : 100, lexa with the tag : Lexa (The 100), The 100 (TV)

when I went to test the rule with '100, lexa' in tag mapper, I get '100, lexa'

when I try with just one tag and replace with another tag, it still doesn't work. can anyone else confirm if this is happening to them or have any insights?

Edit:
Currently running 2.61, Windows 7

Thanks,
Blake