I have contributed to some other reports, but I figured I'd start my own. I only get these errors when BigDebuffs is active on the character. If I disable it, I don't get any errors. I'm hoping it will be fixed soon since the other addons don't seem to fill the gap.

13625x FrameXML\CompactUnitFrame.lua:1122: Attempt to access forbidden object from code tainted by an AddOn
[string "=[C]"]: in function Hide' [string "@FrameXML\CompactUnitFrame.lua"]:1122: in function CompactUnitFrame_UpdateClassificationIndicator'
[string "@FrameXML\CompactUnitFrame.lua"]:1380: in function <FrameXML\CompactUnitFrame.lua:1374>
[string "=[C]"]: in function `CompactUnitFrame_UpdateAuras'
[string "@FrameXML\CompactUnitFrame.lua"]:96: in function <FrameXML\CompactUnitFrame.lua:45>

Locals:
(*temporary) = {
0 =
}

2x [ADDON_ACTION_BLOCKED] AddOn 'BigDebuffs' tried to call the protected function 'CompactRaidFrame2:ClearAllPoints()'.
[string "@!BugGrabber\BugGrabber.lua"]:519: in function <!BugGrabber\BugGrabber.lua:519>
[string "=[C]"]: in function ClearAllPoints' [string "@FrameXML\FlowContainer.lua"]:157: in function FlowContainer_DoLayout'
[string "@FrameXML\FlowContainer.lua"]:17: in function FlowContainer_ResumeUpdates' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:185: in function CompactRaidFrameContainer_LayoutFrames'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:130: in function CompactRaidFrameContainer_TryUpdate' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:62: in function CompactRaidFrameContainer_OnEvent'
[string ":OnEvent"]:1: in function <[string ":OnEvent"]:1>

1x [ADDON_ACTION_BLOCKED] AddOn 'BigDebuffs' tried to call the protected function 'CompactRaidFrame31:ClearAllPoints()'.
[string "@!BugGrabber\BugGrabber.lua"]:519: in function <!BugGrabber\BugGrabber.lua:519>
[string "=[C]"]: in function ClearAllPoints' [string "@FrameXML\FlowContainer.lua"]:157: in function FlowContainer_DoLayout'
[string "@FrameXML\FlowContainer.lua"]:17: in function FlowContainer_ResumeUpdates' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:185: in function CompactRaidFrameContainer_LayoutFrames'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:130: in function CompactRaidFrameContainer_TryUpdate' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:57: in function CompactRaidFrameContainer_OnEvent'
[string ":OnEvent"]:1: in function <[string ":OnEvent"]:1>

1x [ADDON_ACTION_BLOCKED] AddOn 'BigDebuffs' tried to call the protected function 'CompactRaidFrame32:SetAttribute()'.
[string "@!BugGrabber\BugGrabber.lua"]:519: in function <!BugGrabber\BugGrabber.lua:519>
[string "=[C]"]: in function SetAttribute' [string "@FrameXML\CompactUnitFrame.lua"]:169: in function CompactUnitFrame_SetUnit'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:318: in function CompactRaidFrameContainer_AddUnitFrame' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:254: in function CompactRaidFrameContainer_AddPlayers'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:176: in function CompactRaidFrameContainer_LayoutFrames' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:130: in function CompactRaidFrameContainer_TryUpdate'

1x [ADDON_ACTION_BLOCKED] AddOn 'BigDebuffs' tried to call the protected function 'CompactRaidFrame3:SetAttribute()'.
[string "@!BugGrabber\BugGrabber.lua"]:519: in function <!BugGrabber\BugGrabber.lua:519>
[string "=[C]"]: in function SetAttribute' [string "@FrameXML\CompactUnitFrame.lua"]:169: in function CompactUnitFrame_SetUnit'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:318: in function CompactRaidFrameContainer_AddUnitFrame' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:277: in function CompactRaidFrameContainer_AddPets'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:182: in function CompactRaidFrameContainer_LayoutFrames' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:130: in function CompactRaidFrameContainer_TryUpdate'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:62: in function `CompactRaidFrameContainer_OnEvent'

1x [ADDON_ACTION_BLOCKED] AddOn 'BigDebuffs' tried to call the protected function 'CompactRaidFrame4:ClearAllPoints()'.
[string "@!BugGrabber\BugGrabber.lua"]:519: in function <!BugGrabber\BugGrabber.lua:519>
[string "=[C]"]: in function ClearAllPoints' [string "@FrameXML\FlowContainer.lua"]:157: in function FlowContainer_DoLayout'
[string "@FrameXML\FlowContainer.lua"]:17: in function FlowContainer_ResumeUpdates' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:185: in function CompactRaidFrameContainer_LayoutFrames'
[string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:130: in function CompactRaidFrameContainer_TryUpdate' [string "@Blizzard_CompactRaidFrames\Blizzard_CompactRaidFrameContainer.lua"]:57: in function CompactRaidFrameContainer_OnEvent'
[string ":OnEvent"]:1: in function <[string ":OnEvent"]:1>

1x ...eBlizzard_NamePlates\Blizzard_NamePlates.lua:501: Action[FrameMeasurement] failed because[Can't measure restricted regions]: attempted from: :GetLeft().
[string "=[C]"]: in function GetLeft' [string "@Blizzard_NamePlates\Blizzard_NamePlates.lua"]:501: in function GetPreferredInsets'
[string "@Blizzard_NamePlates\Blizzard_NamePlates.lua"]:166: in function UpdateInsetsForType' [string "@Blizzard_NamePlates\Blizzard_NamePlates.lua"]:150: in function ApplyFrameOptions'
[string "@Blizzard_NamePlates\Blizzard_NamePlates.lua"]:116: in function `OnNamePlateAdded'
[string "@Blizzard_NamePlates\Blizzard_NamePlates.lua"]:56: in function <...eBlizzard_NamePlates\Blizzard_NamePlates.lua:47>

Locals:
(*temporary) = {
otherHealPrediction = {
}

I'm having the same issue. Goes away when BigDebuffs is disabled, but if it's enabled, it sends this error one time:

1x [ADDON_ACTION_BLOCKED] AddOn 'BigDebuffs' tried to call the protected function 'CompactRaidFrame5:Show()'.
[string "@!BugGrabber\BugGrabber.lua"]:519: in function <!BugGrabber\BugGrabber.lua:519>
[string "=[C]"]: in function `Show'
[string "@FrameXML\CompactUnitFrame.lua"]:378: in function `CompactUnitFrame_UpdateVisible'
[string "@FrameXML\CompactUnitFrame.lua"]:309: in function <FrameXML\CompactUnitFrame.lua:307>
[string "=[C]"]: in function `CompactUnitFrame_UpdateAll'
[string "@FrameXML\CompactUnitFrame.lua"]:116: in function <FrameXML\CompactUnitFrame.lua:45>

Locals:
Skipped (In Encounter)

And then sends this lua error over 26,000 in the span of about an hour or two:

26459x FrameXML\CompactUnitFrame.lua:1122: Attempt to access forbidden object from code tainted by an AddOn
[string "=[C]"]: in function `Hide'
[string "@FrameXML\CompactUnitFrame.lua"]:1122: in function `CompactUnitFrame_UpdateClassificationIndicator'
[string "@FrameXML\CompactUnitFrame.lua"]:1380: in function <FrameXML\CompactUnitFrame.lua:1374>
[string "=[C]"]: in function `CompactUnitFrame_UpdateAuras'
[string "@FrameXML\CompactUnitFrame.lua"]:96: in function <FrameXML\CompactUnitFrame.lua:45>

Locals:
(*temporary) = <unnamed> {
 0 = <userdata>
}

I attempted to reinstall the addon since I saw it was updated finally, but I'm still getting these same errors. Any updates on this? It's been unusable since April. For reference, I am also working off of a clean install of the game and a clean install of my operating system.