I have had a couple of UI errors after hitting the "E" key to exit the explanation. A reloadui restores the UI. I am up to date on all drivers and have the latest windows patches applied.

Tracebacks from the UI Error window:

EsoUI/Ingame/Antiquities/Keyboard/AntiquityJournal_Keyboard.lua:661: attempt to index a nil value
stack traceback:
EsoUI/Ingame/Antiquities/Keyboard/AntiquityJournal_Keyboard.lua:661: in function '(anonymous)'
(tail call): ?
EsoUI/Libraries/ZO_KeybindStrip/ZO_KeybindStrip.lua:327: in function 'GetKeybindDescriptorDebugIdentifier'
|caaaaaa<Locals> keybindButtonDescriptor = [table:1]{keybind = "UI_SHORTCUT_NEGATIVE", alignment = 3} </Locals>|r
EsoUI/Libraries/ZO_KeybindStrip/ZO_KeybindStrip.lua:340: in function 'ZO_KeybindStrip:HandleDuplicateAddKeybind'
|caaaaaa<Locals> self = [table:2]{allowDefaultExit = T, batchUpdating = T, insertionId = 234}, existingButtonOrEtherealDescriptor = ud, keybindButtonDescriptor = [table:1], currentSceneName = "antiquityJournalKeyboard", existingDescriptor = [table:3]{name = "Undo Changes", addedForSceneName = "antiquityDigging", keybind = "UI_SHORTCUT_NEGATIVE"}, existingSceneName = "antiquityDigging", existingDescriptorIdentifier = "Undo Changes" </Locals>|r
EsoUI/Libraries/ZO_KeybindStrip/ZO_KeybindStrip.lua:374: in function 'ZO_KeybindStrip:AddKeybindButton'
|caaaaaa<Locals> self = [table:2], keybindButtonDescriptor = [table:1], currentSceneName = "antiquityJournalKeyboard", existingButtonOrEtherealDescriptor = ud </Locals>|r
EsoUI/Libraries/ZO_KeybindStrip/ZO_KeybindStrip.lua:548: in function 'ZO_KeybindStrip:AddKeybindButtonGroup'
|caaaaaa<Locals> self = [table:2], keybindButtonGroupDescriptor = [table:4]{}, i = 3, keybindButtonDescriptor = [table:1] </Locals>|r
EsoUI/Ingame/Antiquities/Keyboard/AntiquityJournal_Keyboard.lua:834: in function 'callback'
|caaaaaa<Locals> oldState = "hidden", newState = "showing" </Locals>|r
EsoUI/Libraries/Utility/ZO_CallbackObject.lua:116: in function 'ZO_CallbackObject:FireCallbacks'
|caaaaaa<Locals> self = [table:5]{wasRequestedToShowInGamepadPreferredMode = F, disallowEvaluateTransitionCompleteCount = 1, wasShownInGamepadPreferredMode = F, restoresHUDSceneToggleUIMode = F, name = "antiquityJournalKeyboard", restoresHUDSceneToggleGameMenu = F, fireCallbackDepth = 1, state = "showing"}, eventName = "StateChange", registry = [table:6]{}, callbackInfoIndex = 1, callbackInfo = [table:7]{3 = F}, callback = EsoUI/Ingame/Antiquities/Keyboard/AntiquityJournal_Keyboard.lua:831, deleted = F </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:276: in function 'ZO_Scene:SetState'
|caaaaaa<Locals> self = [table:5], newState = "showing", oldState = "hidden", name = "antiquityJournalKeyboard" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Base.lua:213: in function 'ZO_SceneManager_Base:ShowScene'
|caaaaaa<Locals> self = [table:8]{remoteSceneSequenceNumber = 243, hudUISceneName = "hudui", numRemoteTopLevelShown = 0, initialized = F, hudUISceneHidesAutomatically = T, hudSceneName = "hud", exitUIModeOnChatFocusLost = F, fireCallbackDepth = 0, numTopLevelShown = 0}, scene = [table:5], sequenceNumber = 243 </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:291: in function 'ZO_SceneManager_Leader:ShowScene'
|caaaaaa<Locals> self = [table:8], scene = [table:5] </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:374: in function 'ZO_SceneManager_Leader:OnSceneStateHidden'
|caaaaaa<Locals> self = [table:8], scene = [table:9]{wasRequestedToShowInGamepadPreferredMode = F, disallowEvaluateTransitionCompleteCount = 1, wasShownInGamepadPreferredMode = F, restoresHUDSceneToggleUIMode = F, name = "hud", restoresHUDSceneToggleGameMenu = F, fireCallbackDepth = 0, state = "hidden"}, nextSceneGroup = [table:10]{state = "scene_group_showing", fireCallbackDepth = 0, activeScene = 2}, currentNextScene = [table:5] </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Base.lua:287: in function 'ZO_SceneManager_Base:OnSceneStateChange'
|caaaaaa<Locals> self = [table:8], scene = [table:9], oldState = "hiding", newState = "hidden" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:321: in function 'ZO_SceneManager_Leader:OnSceneStateChange'
|caaaaaa<Locals> self = [table:8], scene = [table:9], oldState = "hiding", newState = "hidden" </Locals>|r
EsoUI/Ingame/Scenes/IngameSceneManager.lua:372: in function 'ZO_IngameSceneManager:OnSceneStateChange'
|caaaaaa<Locals> self = [table:8], scene = [table:9], oldState = "hiding", newState = "hidden" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:277: in function 'ZO_Scene:SetState'
|caaaaaa<Locals> self = [table:9], newState = "hidden", oldState = "hiding", name = "hud" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:426: in function 'ZO_Scene:OnTransitionComplete'
|caaaaaa<Locals> self = [table:9], nextState = "hidden" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:421: in function 'ZO_Scene:DetermineIfTransitionIsComplete'
|caaaaaa<Locals> self = [table:9], nextState = "hidden" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:333: in function 'ZO_Scene:RefreshFragments'
|caaaaaa<Locals> self = [table:9], asAResultOfSceneStateChange = T </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:286: in function 'ZO_Scene:SetState'
|caaaaaa<Locals> self = [table:9], newState = "hiding", oldState = "shown", name = "hud", AS_A_RESULT_OF_SCENE_STATE_CHANGE = T </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Base.lua:221: in function 'ZO_SceneManager_Base:HideScene'
|caaaaaa<Locals> self = [table:8], scene = [table:9], sequenceNumber = 242 </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:295: in function 'ZO_SceneManager_Leader:HideScene'
|caaaaaa<Locals> self = [table:8], scene = [table:9] </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:259: in function 'ZO_SceneManager_Leader:Show'
|caaaaaa<Locals> self = [table:8], sceneName = "antiquityJournalKeyboard", nextSceneClearsSceneStack = T, numScenesNextScenePops = 0, currentScene = [table:9], nextScene = [table:5] </Locals>|r
EsoUI/Ingame/MainMenu/Keyboard/ZO_MainMenu_Keyboard.lua:811: in function 'MainMenu_Keyboard:ShowSceneGroup'
|caaaaaa<Locals> self = [table:11]{lastCategory = 9, sceneShowGroupName = "journalSceneGroup", ignoreCallbacks = F, fireCallbackDepth = 0}, sceneGroupName = "journalSceneGroup", specificScene = "antiquityJournalKeyboard", sceneGroup = [table:10] </Locals>|r
EsoUI/Ingame/MainMenu/Keyboard/ZO_MainMenu_Keyboard.lua:820: in function 'MainMenu_Keyboard:ToggleSceneGroup'
|caaaaaa<Locals> self = [table:11], sceneGroupName = "journalSceneGroup", sceneGroupInfo = [table:12]{category = 7} </Locals>|r
EsoUI/Ingame/MainMenu/Keyboard/ZO_MainMenu_Keyboard.lua:883: in function 'ZO_MainMenuManager_ToggleCategoryInternal'
|caaaaaa<Locals> self = [table:11], category = 7, categoryLayoutInfo = [table:13]{highlight = "EsoUI/Art/MainMenu/menuBar_jou...", disabled = "EsoUI/Art/MainMenu/menuBar_jou...", binding = "TOGGLE_JOURNAL", categoryName = 6604, descriptor = 7, normal = "EsoUI/Art/MainMenu/menuBar_jou...", pressed = "EsoUI/Art/MainMenu/menuBar_jou..."}, categoryState = 0, categoryInfo = [table:14]{lastSceneGroupName = "journalSceneGroup"} </Locals>|r
EsoUI/Ingame/MainMenu/Keyboard/ZO_MainMenu_Keyboard.lua:902: in function 'MainMenu_Keyboard:ToggleCategory'
|caaaaaa<Locals> self = [table:11], category = 7, categoryLayoutInfo = [table:13] </Locals>|r
:1: in function '(main chunk)'
|caaaaaa<Locals> keybind = "TOGGLE_JOURNAL" </Locals>|r