Fix pausing when background process is scheduled but wasn't started yet
Fix pausing when background process is scheduled but wasn't started yet

mcilhargey/Slic3r,mcilhargey/Slic3r,curieos/Slic3r,platsch/Slic3r,lordofhyphens/Slic3r,xoan/Slic3r,alexrj/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,lordofhyphens/Slic3r,pieis2pi/Slic3r,tmotl/Slic3r,mcilhargey/Slic3r,mcilhargey/Slic3r,pieis2pi/Slic3r,curieos/Slic3r,tmotl/Slic3r,lordofhyphens/Slic3r,pieis2pi/Slic3r,xoan/Slic3r,alexrj/Slic3r,xoan/Slic3r,alexrj/Slic3r,prusa3d/Slic3r,pieis2pi/Slic3r,xoan/Slic3r,curieos/Slic3r,prusa3d/Slic3r,alexrj/Slic3r,prusa3d/Slic3r,alexrj/Slic3r,mcilhargey/Slic3r,platsch/Slic3r,platsch/Slic3r,pieis2pi/Slic3r,curieos/Slic3r,xoan/Slic3r,pieis2pi/Slic3r,lordofhyphens/Slic3r,platsch/Slic3r,alexrj/Slic3r,lordofhyphens/Slic3r,curieos/Slic3r,platsch/Slic3r,lordofhyphens/Slic3r,tmotl/Slic3r,platsch/Slic3r,prusa3d/Slic3r,xoan/Slic3r,tmotl/Slic3r,mcilhargey/Slic3r,curieos/Slic3r,tmotl/Slic3r,tmotl/Slic3r,mcilhargey/Slic3r,prusa3d/Slic3r