gnuplot 5.0.5 dash type not working

[Baaaaam (Mouginot Baptiste)]

After updating gnuplot to 5.0.5 I was not able to plot with dashed line any more: gnuplot @5.0.5_0+aquaterm+luaterm+pangocairo+wxwidgets+x11

reverting to gnuplot @5.0.4_0+aquaterm+luaterm+pangocairo+wxwidgets+x11 fixes it...

here is an example of an not working script:

set key bottom right
plot [0.25:300][5:15] '1.dat' every ::1 using 1:2 with lines lw 2 dashtype 1 lc rgb "red" 1", \
  '2.dat' every ::1 using 1:2 with lines lw 2 lt 2 dt 2 lc rgb "red" title "2", \
  '3.dat' every ::1 using 1:2 with lines lw 2 dashtype 1 lc rgb "orange"  title "3", \
  '4.dat' every ::1 using 1:2 with lines lw 2 lt 2 dt 2 lc rgb "orange" title "4"

I using a MBpro early 2015, using MACOS 10.11.6