addCompanionThreadIconArea: no tablist

[cplankey]

Starting last night a Chrome Extension using Inbox SDK started loading nothing but a white screen for users. There had been no updates to the app from our side, so we were surprised it just "stopped working". Below is the output I see from the console:

platform-implementation.js:18 Error logged: Error: addCompanionThreadIconArea: no tablist
    at n (platform-implementation.js:25)
    at eval (platform-implementation.js:25)
    at b (platform-implementation.js:6)
    at _.dispatch (platform-implementation.js:6)
    at Object._emitValue (platform-implementation.js:6)
    at Object._handlePrimaryValue (platform-implementation.js:6)
    at Object._handlePrimaryAny (platform-implementation.js:6)
    at _$handlePrimaryAny (platform-implementation.js:6)
    at b (platform-implementation.js:6)
    at _.dispatch (platform-implementation.js:6)
    at Object._emitValue (platform-implementation.js:6)
    at Object._handleValue (platform-implementation.js:6)
    at Object._handleAny (platform-implementation.js:6)
    at _$handleAny (platform-implementation.js:6)
    at b (platform-implementation.js:6)
    at _.dispatch (platform-implementation.js:6)
    at T._emitValue (platform-implementation.js:6)
    at Object.t (platform-implementation.js:6)
    at HTMLBodyElement.o (platform-implementation.js:6)
    at eval (platform-implementation.js:49)
    at Function.value (platform-implementation.js:49)
    at HTMLBodyElement.eval (platform-implementation.js:49)
    at eval (platform-implementation.js:46)
    at b (platform-implementation.js:6)
    at _.dispatch (platform-implementation.js:6)
    at Object._emitValue (platform-implementation.js:6)
    at Object._handlePrimaryValue (platform-implementation.js:6)
    at Object._handlePrimaryAny (platform-implementation.js:6)
    at _$handlePrimaryAny (platform-implementation.js:6)
    at b (platform-implementation.js:6)
    at _.dispatch (platform-implementation.js:6)
    at Ue._emitValue (platform-implementation.js:6)
    at Ue._handleSubAny (platform-implementation.js:7)
    at Le._$handleSubAny (platform-implementation.js:6)
    at b (platform-implementation.js:6)
    at _.dispatch (platform-implementation.js:6)
    at Object._emitValue (platform-implementation.js:6)
    at Object._handleValue (platform-implementation.js:6)
    at Object._handleAny (platform-implementation.js:6)
    at _$handleAny (platform-implementation.js:6) 

Original error stack:
Error: addCompanionThreadIconArea: no tablist
    at n (https://www.inboxsdk.com/build/platform-implementation.js:25:13187)
    at eval (https://www.inboxsdk.com/build/platform-implementation.js:25:28810)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6975)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object._handlePrimaryValue (https://www.inboxsdk.com/build/platform-implementation.js:6:18084)
    at Object._handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:18406)
    at _$handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:17950)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object._handleValue (https://www.inboxsdk.com/build/platform-implementation.js:6:30060)
    at Object._handleAny (https://www.inboxsdk.com/build/platform-implementation.js:6:10405)
    at _$handleAny (https://www.inboxsdk.com/build/platform-implementation.js:6:10143)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at T._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object.t (https://www.inboxsdk.com/build/platform-implementation.js:6:8015)
    at HTMLBodyElement.o (https://www.inboxsdk.com/build/platform-implementation.js:6:9326)
    at eval (https://www.inboxsdk.com/build/platform-implementation.js:49:7993)
    at Function.value (https://www.inboxsdk.com/build/platform-implementation.js:49:13741)
    at HTMLBodyElement.eval (https://www.inboxsdk.com/build/platform-implementation.js:49:7969)
    at eval (https://www.inboxsdk.com/build/platform-implementation.js:46:436)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6975)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object._handlePrimaryValue (https://www.inboxsdk.com/build/platform-implementation.js:6:18084)
    at Object._handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:18406)
    at _$handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:17950)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Ue._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Ue._handleSubAny (https://www.inboxsdk.com/build/platform-implementation.js:7:9231)
    at Le._$handleSubAny (https://www.inboxsdk.com/build/platform-implementation.js:6:16994)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:24645)
    at Object._handleValue (https://www.inboxsdk.com/build/platform-implementation.js:6:29862)
    at Object._handleAny (https://www.inboxsdk.com/build/platform-implementation.js:6:10405)
    at _$handleAny (https://www.inboxsdk.com/build/platform-implementation.js:6:10143) 

Error logged from:
    at n (https://www.inboxsdk.com/build/platform-implementation.js:18:29274)
    at l (https://www.inboxsdk.com/build/platform-implementation.js:49:7695)
    at e.value (https://www.inboxsdk.com/build/platform-implementation.js:49:12553)
    at n (https://www.inboxsdk.com/build/platform-implementation.js:25:13181)
    at eval (https://www.inboxsdk.com/build/platform-implementation.js:25:28810)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6975)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object._handlePrimaryValue (https://www.inboxsdk.com/build/platform-implementation.js:6:18084)
    at Object._handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:18406)
    at _$handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:17950)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object._handleValue (https://www.inboxsdk.com/build/platform-implementation.js:6:30060)
    at Object._handleAny (https://www.inboxsdk.com/build/platform-implementation.js:6:10405)
    at _$handleAny (https://www.inboxsdk.com/build/platform-implementation.js:6:10143)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at T._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object.t (https://www.inboxsdk.com/build/platform-implementation.js:6:8015)
    at HTMLBodyElement.o (https://www.inboxsdk.com/build/platform-implementation.js:6:9326)
    at eval (https://www.inboxsdk.com/build/platform-implementation.js:49:7993)
    at Function.value (https://www.inboxsdk.com/build/platform-implementation.js:49:13741)
    at HTMLBodyElement.eval (https://www.inboxsdk.com/build/platform-implementation.js:49:7969)
    at eval (https://www.inboxsdk.com/build/platform-implementation.js:46:436)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6975)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Object._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Object._handlePrimaryValue (https://www.inboxsdk.com/build/platform-implementation.js:6:18084)
    at Object._handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:18406)
    at _$handlePrimaryAny (https://www.inboxsdk.com/build/platform-implementation.js:6:17950)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273)
    at Ue._emitValue (https://www.inboxsdk.com/build/platform-implementation.js:6:21931)
    at Ue._handleSubAny (https://www.inboxsdk.com/build/platform-implementation.js:7:9231)
    at Le._$handleSubAny (https://www.inboxsdk.com/build/platform-implementation.js:6:16994)
    at b (https://www.inboxsdk.com/build/platform-implementation.js:6:6942)
    at _.dispatch (https://www.inboxsdk.com/build/platform-implementation.js:6:21273) 

Extension App Ids: [
  {
    "appId": "hidden",
    "causedBy": true
  }
] 
Sent by App: false 
Session Id: 1610024069315-0.6447384619225003 
Extension Id: chrome-extension://hidden/ 
InboxSDK Loader Version: 0.7.25-1559685862664-5d64fc572c9e024a 
InboxSDK Implementation Version: 0.7.25-1608751751483-b22e3009dc71a818 
Is Using Sync API: true

and

Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist.

I am happy to provide more info if needed. Thanks!