I don't believe this to be a packaging mistake: https://dev.getsol.us/source/leveldb/browse/master/package.yml
I think its being dropped by the system as mathematically 1.2 and 1.20 is the same number. It's a decimal. Try add 1.20 + 0 = into a calculator the trailing 0 will be eaten in the answer.
1.20 read out is not "one point twenty" its "one point two". The zero is representing nothing and can be left off. If they're going to use such numbers they should have gone to 2 after 1.9 or 1.9.1 not 1.10
If the system needs tweaking to avoid this, I guess that's up to the team.