Hi there!
I’ve noticed that plots aren’t smooth lines anymore with the latest 5.6rc1 and rc2, you can see the issue on the attached picture (test.png). I’ve also encountered another problem while trying to make a better screenshot to demonstrate the first problem. I split the view into 4 quadrants in order to get smaller file and better visualize the first problem. However I get very bad picture (see test.small.png in the attachment) together with the warning:
Generic Warning: In /home/buildslave/dashboards/buildbot/paraview-pvbinsdash-linux-shared-release_superbuild/build/superbuild/paraview/src/ParaViewCore/ServerManager/Rendering/vtkSMSaveScreenshotProxy.cxx, line 191
Cannot render at '(769, 459)'. Using '(768, 459)'