Download Diagnostic broken?

Can anyone confirm that Diagnostic Download is broken?

I can no longer download diagnostic information on two HA instances for any integration (2024.6.2). On a other instance (2024.5.x) it works fine.
I got the error message below in the browser console
Is this a known bug? Haven’t found anything on github yet.

Uncaught (in promise) 
Object { code: "invalid_format", message: "expected str for dictionary value @ data['path']. Got None" }
​
code: "invalid_format"
​
message: "expected str for dictionary value @ data['path']. Got None"
​
<prototype>: Object { … }
ha-config-integration-page.ts:1319:6
    value ha-config-integration-page.ts:1319
    AsyncFunctionThrow self-hosted:803
    (Async: async)
    handleEvent lit-html.ts:2018
    (Async: EventListener.handleEvent)
    _$AI lit-html.ts:2007
    v lit-html.ts:1192
    g lit-html.ts:1553
    _$AI lit-html.ts:1384
    v lit-html.ts:1192
    g lit-html.ts:1540
    _$AI lit-html.ts:1384
    v lit-html.ts:1192
    g lit-html.ts:1540
    _$AI lit-html.ts:1384
    T lit-html.ts:1618
    _$AI lit-html.ts:1403
    v lit-html.ts:1192
    g lit-html.ts:1540
    _$AI lit-html.ts:1384
    B lit-html.ts:2183
    update lit-element.ts:165
    performUpdate reactive-element.ts:1329
    scheduleUpdate reactive-element.ts:1261
    _$Ej reactive-element.ts:1233
    AsyncFunctionNext self-hosted:799
    (Async: async)
    requestUpdate reactive-element.ts:1208
    set reactive-element.ts:726
    value ha-config-integration-page.ts:931
    InterpretGeneratorResume self-hosted:1412
    AsyncFunctionNext self-hosted:799
    (Async: async)
    value ha-config-integration-page.ts:186
    performUpdate reactive-element.ts:1327
    scheduleUpdate reactive-element.ts:1261
    _$Ej reactive-element.ts:1233

Answering myself:

It is a known bug: