Battleground Queue Pop Issue

[Lemuria345]

Describe the bug:
When the battleground queue pops up, I often cannot click on 'Enter Battle' or 'Hide'. When it does not work, the below error message pops up.

To Reproduce:
Happens most times when a battleground queue pops. I have noticed the first queue after logging in is usually ok, but the second and subsequent queues do not work.

Expected Behavior:
Clicking the 'Enter Battle' or 'Hide' buttons should perform accordingly instead of not doing anything.

Lua Error:
Date: 2021-04-30 15:29:21
ID: 2
Error occured in: AddOn: Prat-3.0
Count: 1
Message: Error: AddOn Prat-3.0 attempted to call a forbidden function (AcceptBattlefieldPort()) from a tainted execution path.
Debug:
[C]: AcceptBattlefieldPort()
..\FrameXML\StaticPopup.lua:689: OnAccept()
..\FrameXML\StaticPopup.lua:5002: StaticPopup_OnClick()
[string ":OnClick"]:1:
[string ":OnClick"]:1

Locals:
None

AddOns:
Swatter, v8.2.6377 (SwimmingSeadragon)
AdvancedInterfaceOptions, v1.4.4
Atlas, vv1.47.03.11304.00
AtlasClassicWoW, vv1.47.02.11304.00
AtlasLootClassic, vv2.0.1
AtlasLootClassicData, vv2.0.1
AtlasLootClassicDungeonsAndRaids, vv2.0.1
AucAdvanced, v8.2.6430 (SwimmingSeadragon)
AucFilterBasic, v8.2.6364 (SwimmingSeadragon)
AucScanData, v8.2.6365 (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)
Auctionator, v8.1.0
BagBrother, v
Bagnon, v9.0.6
BeanCounter, v8.2.6434 (SwimmingSeadragon)
Chinchilla, vv2.11.0
ClassicCastbars, vv1.3.23
ClassicCastbarsOptions, vv1.3.23
ClassicLootAssistant, v
Coordinates, v2.1.0
DBMCore, v1.13.72
DBMDefaultSkin, v
DBMInterrupts, v1.13.5
DBMPvP, vr122
DBMSoundEventsPack, v1.6.10
DBMSpellTimers, vr132
DBMStatusBarTimers, v
Decursive, v2.7.8.1
DejaClassicStats, v1307r003
Details, v
DetailsStreamer, v
DetailsTinyThreat, v
Dominos, v9.0.27
DominosCast, v
DominosEncounter, v
DominosProgress, v
DominosRoll, v
ElkBuffBars, v2.6.0-196
Enchantrix, v8.2.6428 (SwimmingSeadragon)
EnchantrixBarker, v8.2.6469 (SwimmingSeadragon)
ExRT, v4520
GatherMate2, v1.45.6-classic
GatherMate2MapButton, v1.1
GatherNotify, v1.6
GatherTrackingReminder, v2.0.6
GTFO, v4.60
HealCommClassic, v
honorspy, v1.7.7
Informant, v8.2.6374 (SwimmingSeadragon)
ItemRack, v
kgPanels, v1.30.0
LeatrixMaps, v1.13.103
LeatrixPlus, v1.13.103
Masque, v9.0.5
MasqueApathy, v9.0.5
MasqueAzerite, v1.0
MasqueCaith, v9.0.5
MasqueCirque, v9.0.5
MasqueDiabolic, v1.0
MasqueEntropy, v9.0.5
MasqueEpix, v1.1
MasqueGears, v9.0.5
MasqueGoldpaw, v1.0-Release
MasqueLiteStep, v9.0.5
MasqueQhil, v1.3.0
MasqueRaeli, vr24-Release
MasqueSerenity, v9.0.5
MasqueSquat, v1.9.0
MasqueStylo, vv7.2.0
NameplateClassColors, v1.0
NovaWorldBuffs, v1.97
OmniCC, v9.0.8
Pawn, v2.4.18
PitBull4, vv4.2-classic2
Prat30, v3.9.1
Prat30Libraries, v
Quartz, v3.5-classic-5
Questie, v6.2.6
QuestLogEx, v1.2
RCLootCouncilClassic, v0.12.1
ShadowedUnitFrames, vv4.2.3-Classic
SilverDragon, vv11302.0
SilverDragonClassic, vv11302.0
Stubby, v8.2.6376 (SwimmingSeadragon)
ThreatClassic2, v2.31
TidyPlatesThreatPlates, v10.1.6
TitanClassic, v1.2.8.11306
TitanClassicAmmo, v1.2.8.11306
TitanClassicBag, v1.2.8.11306
TitanClassicClock, v1.2.8.11306
TitanClassicGold, v1.2.8.11306
TitanClassicGuild, v1.0.0.4
TitanClassicLocation, v1.2.8.11306
TitanClassicLootType, v1.2.8.11306
TitanClassicMail, v1.0.0.2
TitanClassicPerformance, v1.2.8.11306
TitanClassicRecZone, v1.0.0.5
TitanClassicRegen, v1.2.8.11306
TitanClassicRepair, v1.2.8.11306
TitanClassicVolume, v1.2.8.11306
TitanClassicXP, v1.2.8.11306
TitanProfessionsMulti, v1.5.3
TitanSocial, v1.13.3
TomCats, v0.0.2
TomTom, vv11306-1.2.0
VendorPrice, v1.3.8
WeakAuras, v3.3.0
WeaponSwingTimer, v4.1.0
WhereToGatherClassic, v1.0
BlizRuntimeLib_enUS v1.13.7.11307
(ck=cae)

Prat Version:
3.9.1-Classic Prat 3.0

[SimplyAtun]

Ditto! It doesn't happen every time - when it does, I need to reload UI to get Enter Battle to work again.

[Nimbix-wow]

Same thing happens to me with the prepatch version