Retrologue 2.2.40 output

After loading a patch or making a patch , after a while it will output one side of stereo output. It plays as expected initially ,the controls stay set the same on the synth and in the daw. Is this a known bug or user error ?
2021-03-04T05:00:00Z

Which DAW ( version and build number) on which OS (version number) are you using?