Looks like my previous report for v1.4.1 :
preview in skim : minor bug ? - ID: 3303998
is back again in 1.5.0 under Galileo Indigo.
I wanted to investigate further if the problem occurred when upgrading from 1.4.2, or when upgrading to Galileo indigo, but I couldn't find the teclipse url to easily install the 1.4.2.