[Bug][Upload] Using the component in an uncontrolled state results in inconsistent successfully uploaded message and progressbar progress

[plevamatus]

I'm submitting a...

• Bug report

Current behavior

When uploading multiple files at once, the upload control incorrectly indicates whether a file was successfully uploaded or not. For some files, the progress bar remains visible, for others, 'File(s) successfully uploaded' is displayed, and some appear as if their upload never started, despite all requests ending with a status of 200.
See attached video (https://github.com/telerik/kendo-react/assets/11454499/cbdeeb5f-92c8-4810-b9f1-0618aea9adb1) and screenshot.

Expected behavior

I would expect that after successfully uploading files, the text 'File(s) successfully uploaded' would appear for each one, and the progress bar would disappear.

Minimal reproduction of the problem with instructions

1. Open demo in codesandbox.io https://codesandbox.io/p/sandbox/sharp-burnell-lpf9n9 which is inspired by your example.
2. Click on "Select files..." button and select 4 files.
3. Wait until the upload finishes.

Environment

Package versions:

    "react": "^18.0.0",
    "react-dom": "^18.0.0",
    "react-scripts": "^5.0.0",
    "@progress/kendo-react-upload": "7.3.0",
    "@progress/kendo-theme-default": "7.2.1",
    "@progress/kendo-react-common": "7.3.0",
    "@progress/kendo-licensing": "1.3.5",
    "@progress/kendo-react-progressbars": "7.3.0",
    "@progress/kendo-react-animation": "7.3.0",
    "@progress/kendo-react-intl": "7.3.0",
    "@progress/kendo-intl": "3.1.2",
    "@progress/kendo-react-buttons": "7.3.0",
    "@progress/kendo-react-popup": "7.3.0",
    "@progress/kendo-popup-common": "1.9.2",
    "axios": "1.6.8",
    "react-transition-group": "2.5.3"

Browser:

• Chrome (desktop) version 122.0.6261.131

System:

• Platform: Windows

[PaskalevStoyan]

hello @plevamatus,

Thanks for reporting the issue to us. This appears to be a bug on our side. Please excuse us for the inconvenience caused. Our team will fix it as soon as possible.

If you have any other questions, please don't hesitate to submit a ticket in our support system.

Cheers,
Stoyan

[made2burn]

I am also experiencing this issue.

[iadnonov]

Reported again in #2238