Chrome: file input with "multiple" and initial "value" causes DataTransferItemList error when adding more files

[bizcmd]

Describe the bug
A FormulateInput of type file and property multiple with an initial value set holding a length 1 array will generate an error in Chrome when adding another file to the list via the Add File button:

Failed to execute 'add' on 'DataTransferItemList': parameter 1 is not of type 'File'."

found in

---> <FormulateFiles>
       <FormulateInputFile>
         <FormulateInput>
           <FormulateForm>
             <Root>

In Safari, it works without error.

To Reproduce
Use CodePen below and click to add a new file. Chrome will immediately add it to the list visually (without the normal faux loader animations) and will produce console error as above.

CodePen:

https://codepen.io/flyfoxuk/pen/QWGwggm

Expected behavior
The selected file to be added without error to the file list.

Device information:

• Mac
• OS: 10.15.5
• Browser [Chrome 88.0.4324.96]

Further info
Seems to be related to mergeFileList function in FileUpload.js ??

[zgurea1]

same issue.

[justin-schroeder]

Ok, this is fixed in the release/2.5.1 branch 👍