Submaster set to Min is releasing to background value

I have submasters set to Restore Minimum and priority 6. Main cue list is priority 4. Levels are being adjusted using the submasters, and then recorded into cues. After recording, when a submaster moves to 0 it dims down, but then snaps back to the cue value. My understanding of Restore Minimum is that it should hold the 0% intensity value when the submaster reaches 0, instead of restoring to background value. 

Software v3.3.5 b69. 

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