Issue with FileUploaderDropContainer: Cannot read property 'files' of undefined

[zbeedatm]

What package(s) are you using?

• carbon-components
• carbon-components-react

Detailed description

I upgraded to 10.9.0 release, and found that FileUploaderDropContainer isn't working anymore when browsing for a file, however it's working fine when dropping a file inside the drop box!

Additional information

FileUploaderDropContainer.js:176 Uncaught TypeError: Cannot read property 'files' of undefined
at validateFiles (FileUploaderDropContainer.js:176)
at handleChange (FileUploaderDropContainer.js:207)
at HTMLUnknownElement.callCallback (react-dom.development.js:337)
at Object.invokeGuardedCallbackDev (react-dom.development.js:386)
at invokeGuardedCallback (react-dom.development.js:439)
at invokeGuardedCallbackAndCatchFirstError (react-dom.development.js:454)
at executeDispatch (react-dom.development.js:585)
at executeDispatchesInOrder (react-dom.development.js:610)
at executeDispatchesAndRelease (react-dom.development.js:713)
at executeDispatchesAndReleaseTopLevel (react-dom.development.js:722)
at forEachAccumulated (react-dom.development.js:694)
at runEventsInBatch (react-dom.development.js:739)
at runExtractedPluginEventsInBatch (react-dom.development.js:881)
at handleTopLevel (react-dom.development.js:5832)
at batchedEventUpdates$1 (react-dom.development.js:24387)
at batchedEventUpdates (react-dom.development.js:1414)
at dispatchEventForPluginEventSystem (react-dom.development.js:5928)
at attemptToDispatchEvent (react-dom.development.js:6045)
at dispatchEvent (react-dom.development.js:5948)

Note

I thought at the beginning that it's related to the upgrade that I did to 10.9.0 (from 10.7.4) but managed to reproduce it on Sandbox!

I had this sandbox that the browse functionality working on it:
https://codesandbox.io/s/fragrant-morning-267l5

I forked the same sandbox, but with the new one the browse functionality isn't working:
https://codesandbox.io/s/heuristic-field-w2y75

[asudoh]

Hi 👋 thank you for reporting - Seems a duplicate of #4899, let's discuss there further.

[zbeedatm]

Weird... even after reverting back to:

"@carbon/colors": "^10.5.0",
"@carbon/icons": "^10.6.1",
"@carbon/icons-react": "^10.6.1",
"@storybook/addon-knobs": "^5.2.6",
"@types/storybook__addon-actions": "^3.4.3",
"browserslist": "^4.7.3",
"carbon-components": "^10.7.4",
"carbon-components-react": "^7.7.4",

Symptom still exist, I'm not getting that error but nothing is happening when browsing for a file and selecting it!!!