Within the adventure guide, when you go to highlight the little reward orbs to see what items/rewards you gain, WoW will throw up an LUA error when BlizzMove is enabled. Will put the entire error in quotes bellow.

Message: ...zzard_EncounterJournal\Blizzard_EncounterJournal.lua:3213: Action[SetPoint] failed because[SetPoint would result in anchor family connection]: attempted from: EncounterJournalTooltip:SetPoint.
Time: Tue Dec 28 12:35:12 2021
Count: 6
Stack: ...zzard_EncounterJournal\Blizzard_EncounterJournal.lua:3213: Action[SetPoint] failed because[SetPoint would result in anchor family connection]: attempted from: EncounterJournalTooltip:SetPoint.
[string "=[C]"]: in function `SetPoint'
[string "@interface\AddOns\Blizzard_EncounterJournal\Blizzard_EncounterJournal.lua"]:3213: in function <...zzard_EncounterJournal\Blizzard_EncounterJournal.lua:3209>

Locals: (*temporary) = EncounterJournalTooltip {
0 =
OnBackdropLoaded = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:12
GetBackdropColor = defined @interface\SharedXML\SharedTooltipTemplates.lua:182
SetupTextureCoordinates = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:16
OnBackdropSizeChanged = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:13
HasBackdropInfo = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:18
SetBackdropBorderColor = defined @interface\SharedXML\SharedTooltipTemplates.lua:186
layoutType = "TooltipDefaultLayout"
Item1 = EncounterJournalTooltipItem1 {
}
GetEdgeSize = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:14
NineSlice = {
}
SetBorderBlendMode = defined @interface\SharedXML\SharedTooltipTemplates.lua:194
headerText = EncounterJournalTooltipHeaderText {
}
ApplyBackdrop = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:22
TooltipBackdropOnLoad = defined @interface\SharedXML\SharedTooltipTemplates.lua:163
ClearBackdrop = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:34
Item2 = EncounterJournalTooltipItem2 {
}
GetBackdropBorderColor = defined @interface\SharedXML\SharedTooltipTemplates.lua:190
GetBackdrop = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:19
GetBackdropCoordValue = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:15
SetupPieceVisuals = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:17
SetBackdropColor = defined @interface\SharedXML\SharedTooltipTemplates.lua:178
SetBackdrop = defined @interface\AddOns\Blizzard_Deprecated\Deprecated_9_1_5.lua:27
clickText = EncounterJournalTooltipClickText {
}
}
(*temporary) = "BOTTOMLEFT"
(*temporary) = {
0 =
iconRingHighlight = {
}
data =

{
}
iconRing = {
}
icon = {
}
text = {
}
}
(*temporary) = "TOPRIGHT"
(*temporary) = 0
(*temporary) = 0

hi, we've seen this type of issue before, and it can be a bit hard to find and fix

for reference, this error shows up if you hover over an icon after moving the frame
and if you try to move the frame after (successfully) showing a tooltip, then the whole frame breaks

as a workaround, you can disable moving the encounter journal in blizzmove settings (/bm)

should be fixed next version