Bugs: unexpected submaster intensity behaviors

I was at work, and running a step-based effect. When I recorded the live levels to a cue, it changed some of the intensities. Now I am at home and actually have time to post a more detailed explanation.

<Effect> [1] [Enter]
• <Type> {StepBased}
• {Step} [1] [Thru] [2]
Step 1: channel 1, In time: 0, Dwell:1, Decay: 0, on state: 100, off state: 0
Step 2: channel 2, In time: 0, Dwell:1, Decay: 0, on state: 100, off state: 0
[sub][sub]
• [Sub] [1] [enter]{Mode}{Mode} [Enter] to make it an EffectSub
(live)
• 1[thru]2 [Effect] [1] [Enter], runs the effect
• [Record] [Sub] [1] [Enter][enter]
[stopeffect][enter]
[sub]1[enter] then loading it to a virtual fader, pressing the bump button, and bringing the sub up to 50 runs the effect at 50% output
Bug 1
1 thru 2 @ 10 [enter] stops the effect running from the sub.
Bumping the sub again does nothing (I guess "stops" the sub that has an effect that has already been stopped.)
Bumping the sub again changes the output from 10 to 55. WTF? It should be from 10 to 50, especially since the fader tells me the sub is running at 50.

Bug 2
bump sub 1, set to 50
[record][1] should record the look to cue 1, with the effect running at 50%. It does.
[go to cue] [out][enter]
pressing the bump button, and bringing the sub up to 60 runs Effect 1 at 60% output
1 thru 2 @ 10 [enter]
bump sub 1 twice at 60
sub 1 is running from 10 to 64, see bug above
[record][next]
Now, Ch. 1 alternates from 10 to 64, and Ch. 2 alternates from 4 to 64. If you look at the cues in blind spreadsheet, Ch. 1 didn't get effect 1 recorded into cue 2.

Bug 3: Virtual fader level and submaster output level don't always match
Sub 1 is an effect sub, running a step based effect that sets channels 1-12 from 0 to 100. It's proportional and HTP.
Sub 6 is an additive sub, with channels 1-12 set to 100.
If I run sub 1 by itself, the sub level matches the max output level of the channels.
If I run sub 6 by itself, the sub level matches the output level of the channels.
If I run both together, the value of sub 1 doesn't match the max output level of the channels unless it is at 0 or 100. For example, if I set sub 6 to 20 and sub 1 to 50, the output of the channels toggles between 20 and 60 instead of 20 and 50 like it should.

Bug 4: Virtual fader level and submaster output level don't always match
I have a sub programmed to be Channel 1@Full. If the sub is HTP, the submaster level matches the output level precisely. If the submaster is set to be LTP, the sub level matches the output level when it is at zero and at full, but in between, the output level is can be higher or lower than the sub level by as many as 14 points. I have no other submasters or cues contributing to live output.
This applies to NIPs as well.

edited

and...i may have stuck my foot in my mouth with this. More to come. Sorry!