I. Lowpass filter automation does not start working until you touch/move the lowpass knob in the channel editor :
1. Set an automation track for lowpass in the arange
2. Insert a few points
3. Automation doesnt start working until you open track editor and move/touch the lowpass knob with your mouse- it can be seen when the knob changes color to green=active
As an addition to the lowcut automation problem the issue is most evident on Group tracks where automation doesnt work if track editor isnt visible.As soon as i close the editor automation stops functioning.
This issue is present on all tracks (audio,instrument and group) but its most evident on group tracks.
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II. Pregain automation dissappears when moving a point to infinite value:
1.Set up pregain automation in the arrange
2.Drag a envelope point to infinite value and the whole envelope dissapears visually
Ive reported this issue in MySteinberg as a ticket about a month ago but havent received any answer from Steinberg support .Steinberg should really improve their Support ticket answering

windows 10 64bit Cubase 9.0.30/9.5