DropZone can't add same file again when remove file from state

[jzsplk]

Issue summary

Try to add a remove button to clear the files uploaded. Can not add the same file again with click Popover after I have removed it. The onDrop props is ignored.

Expected behavior

Expected I can remove a file from DropZone and I can upload it again.

When I remove the file from state outside the DropZone, the state inside the DropZone ignore the onDrop function for the same file id.

Actual behavior

Steps to reproduce the problem

1. make a fileDropZone with DropZone component
2. add a remove function, to clear the files in state in Example component.
3. use the remove function, and try to add file again with click Popover of DropZone
   it's a sample for this bug:
   https://codesandbox.io/s/01nmwypl8l

Specifications

• Are you using the React components? (Y/N):Y
• Polaris version number:2.8.0
• Browser: Chrome
• Device: MacBook Pro
• Operating System: macOs HIGH SIERRA 10.13.6

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[dpersing]

Hi @jzsplk! Using your example, I'm able to re-upload a file using the native dialog that appears when the "Add image" text is clicked, as well as by dragging and dropping. Are you still experiencing this issue?

[jzsplk]

@dpersing Hi, still experiencing this issue. You are able to re-upload cause my example has been modify by somebody. In the modified example , DropZone is closed when file uploaded. But I need to keep the DropZone so user can continue to upload with it. I have modified the example back.

[dpersing]

Hi @jzsplk, It looks like I'm still able to upload the same image multiple times. Do you perhaps have a different sandbox that hasn't been altered?

Also, are you using the small-format Drop zone for allowing users to add multiple images? I'd recommend using one of the larger versions if users are meant to upload multiple files.

[vladucu]

hi @dpersing !
we're seeing the same issue, here's a reproduction, basically if you upload using the native dialog (not drag-and-drop) then remove the file and try again with the same one, it won't work.

[dpersing]

Hi @vladucu! I'm able to repro with your example. Thanks! I'll share with the team.

[manishsundriyal]

Yes, I am also facing the same issue. In my case when a file is rejected by the customValidator is uploaded again then, it's not working.