I've deleted the addon and blown away my WTF, then reinstalled to minimize the chance this was something on my end.

**** This may have had something to do with the "Include Player" checkbox option in Party Groups. My entire party disappears from the config periodically (doing random things in the congig). I can go to Groups, uncheck then check the Include Player checkbox and it resolves it. ****

However, sometimes the entire party config display with disappear for other reasons too, for instance I just disabled Party Group and it collapsed to a single unit, then wouldn't come back when I Enabled it again. This happened whether I had Include Player on or off. To fix it I still toggled Include Player and it resolved.

Not sure if it is related but when I go to Layout Bars and Enable or Disable a bar, it only shows up on the FIRST party unit not on all of them.

Date: 2019-09-30 06:36:41
ID: 1
Error occured in: Global
Count: 1
Message: ...erface\AddOns\PitBull4\Modules\LuaTexts\LuaTexts.lua line 813:
Usage: UnitIsUnit("unit", "otherUnit")
Debug:
[C]: UnitIsUnit()
...erface\AddOns\PitBull4\Modules\LuaTexts\LuaTexts.lua:813:
...erface\AddOns\PitBull4\Modules\LuaTexts\LuaTexts.lua:812
...erface\AddOns\PitBull4\Modules\LuaTexts\LuaTexts.lua:1272: AddFontString()
...ddOns\PitBull4\ModuleHandling\TextProviderModule.lua:121: UpdateFrame()
PitBull4\ModuleHandling\Module.lua:320: Update()
PitBull4\UnitFrame.lua:816: Update()
PitBull4\UnitFrame.lua:380:
PitBull4\UnitFrame.lua:317
[C]: ?
[C]: SetAttribute()
..\FrameXML\SecureGroupHeaders.lua:227:
..\FrameXML\SecureGroupHeaders.lua:123
..\FrameXML\SecureGroupHeaders.lua:399:
..\FrameXML\SecureGroupHeaders.lua:387
[C]: SecureGroupHeader_Update()
..\FrameXML\SecureGroupHeaders.lua:71:
..\FrameXML\SecureGroupHeaders.lua:66
[C]: SetAttribute()
PitBull4\GroupHeader.lua:157: func()
PitBull4\Main.lua:1809:
PitBull4\Main.lua:1803
(tail call): ?
PitBull4\GroupHeader.lua:482: RefixSizeAndPosition()
PitBull4\GroupHeader.lua:701: func()
PitBull4\Main.lua:1809:
PitBull4\Main.lua:1803
(tail call): ?
PitBull4\GroupHeader.lua:1549:
PitBull4\GroupHeader.lua:1468
Locals:
(*temporary) = "player"
(*temporary) = nil

AddOns:
MoncaiCompare, v7.2.0
Swatter, v8.2.6377 (SwimmingSeadragon)
ArkInventory, v30900
ArkInventoryRules, v20000
ArkInventorySearch, v20000
AtlasLootClassic, vv1.1.11
AucAdvanced, v8.2.6420 (SwimmingSeadragon)
AucFilterBasic, v8.2.6364 (SwimmingSeadragon)
AucStatHistogram, v8.2.6366 (SwimmingSeadragon)
AucStatiLevel, v8.2.6370 (SwimmingSeadragon)
AucStatPurchased, v8.2.6367 (SwimmingSeadragon)
AucStatSimple, v8.2.6399 (SwimmingSeadragon)
AucStatStdDev, v8.2.6369 (SwimmingSeadragon)
AucUtilFixAH, v8.2.6371 (SwimmingSeadragon)
Bartender4, v4.8.7
BeanCounter, v8.2.6422 (SwimmingSeadragon)
ClassicThreatMeter, v1.07
Clique, vv1.0.3-classic
DBMCore, v1.13.9
DBMDefaultSkin, v
DBMStatusBarTimers, v
Enchantrix, v8.2.6411 (SwimmingSeadragon)
FBBroker, v1.37
Fishbringer, v1.13-3
FishingBuddy, v0.4
GatherMate2, v1.45
Informant, v8.2.6374 (SwimmingSeadragon)
ItemRack, v
MoveToolTip, v1.0.6
OmniCC, v8.2.4
PitBull4, vv4.1.20-classic4
Questie, v4.1.1 BETA
Recount, vv1.13.2c
SlideBar, v8.2.6375 (SwimmingSeadragon)
Stubby, v8.2.6376 (SwimmingSeadragon)
TidyPlatesThreatPlates, v1.2.3
WeaponSwingTimer, v4.1.0
BlizRuntimeLib_enUS v1.13.2.11302
(ck=4c3)