JavaCall does not work well with @async

MWE_JavaCall_async_incorrect.jl

using JavaCall;
println("I threw a wish in the well ...")
JavaCall.init()
println("Hey, I just met you and this is crazy")
jls = @jimport java.lang.System
version = jcall(jls,"getProperty",JString,(JString,),"java.version")
println("Java Version: ",version)
jlm = @jimport java.lang.Math
@async begin
    println("But here's my number, so call me maybe")
    sin90 = jcall(jlm, "sin", jdouble, (jdouble,), pi/2)
    println("sin(90) = ",sin90)
    sin45 = jcall(jlm, "sin", jdouble, (jdouble,), pi/4)
    println("sin(45) = ",sin45)
    println("It's hard to look right at you baby")
end
sleep(3)
println("You took your time with the call")

MWE_JavaCall_async_segfault.jl

using JavaCall;
println("I threw a wish in the well ...")
@async begin
    println("Hey, I just met you and this is crazy")
    JavaCall.init()
    println("But here's my number, so call me maybe")
    jls = @jimport java.lang.System
    version = jcall(jls,"getProperty",JString,(JString,),"java.version")
    println("Java Version: ",version)
    jlm = @jimport java.lang.Math
    sin90 = jcall(jlm, "sin", jdouble, (jdouble,), pi/2)
    println("sin(90) = ",sin90)
    sin45 = jcall(jlm, "sin", jdouble, (jdouble,), pi/4)
    println("sin(45) = ",sin45)
    println("It's hard to look right at you baby")
end
sleep(3)
println("You took your time with the call")