Cuffcompare: Sensitivity (Sn) higher than 100

Question

[drtamermansour]

I compare 2 assemblies using Cuffcompare. Unexpectedly I am getting the exon level sensitivity > 100%.

I found the same question on their forum with no answer

https://groups.google.com/forum/#!searchin/tuxedo-tools-users/cuffcompare$20sensitivity/tuxedo-tools-users/80oj3jH8juI/t9Cu7cAjAlAJ

Also I found the similar question on stackExchange with no answer

http://biology.stackexchange.com/questions/38599/how-to-interpret-this-cuffcompare-result-sensitivity-over-100?newreg=6be79afeac014d2cb5f2cac524859fe6