Automation-Volume-Trim-Stopped-Not Working

Ver 5.5.3 Win XP 32

When the transport is stopped and I enter “trim” volume automation - the fader for the channel or group moves to the middle as it is suppose to but moving the fader does not alter the volume automation between the markers.

It does work but only when the tranport is running. It used to work when stopped with earlier 5.? versions.

Is it my system or universal?