Uncaught Error: Could not find code view table when enabling codecov decorations on github.com

Created by: felixfbecker

Go to https://github.com/sourcegraph/sourcegraph/pull/5320/files and enable codecov background decorations. No decorations appear. Error in console (multiple times):

dom_functions.ts:239 Uncaught Error: Could not find code view table
    at isDomSplitDiff (dom_functions.ts:239)
    at getDiffCodeCellFromLineNumber (dom_functions.ts:77)
    at Object.getCodeElementFromLineNumber (dom_functions.ts:127)
    at applyDecorations (extensions.tsx:144)
    at SafeSubscriber.update [as _next] (code_intelligence.tsx:735)
    at SafeSubscriber.__tryOrUnsub (Subscriber.ts:266)
    at SafeSubscriber.next (Subscriber.ts:208)
    at Subscriber._next (Subscriber.ts:140)
    at Subscriber.next (Subscriber.ts:100)
    at FinallySubscriber.Subscriber._next (Subscriber.ts:140)