Originally Posted by
soyabean
The 11-30 is messing it up with a chain too long because that is expecting a 1x up there.
You'd be able to remove one link with a smaller 11-28T, thus taughting the chain when it's on the 11T.
There exists aftermarket bolt-on dropouts that let's you place a RD even lower.
In addition to the first sentence being incorrect, a hanger extender (assuming that’s what is meant by “aftermarket bolt-on dropout) will not change the chain wrap capacity of the derailleur.