Windows: Drag & Drop from archive results in 0 B attachments

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Describe the bug I can add files from Windows Explorer to attachments via drag & drop. This also works if I have an open zip file in explorer and drag and drop the files. But the files seem not to be unzipped in the process. Instead, there is now a 0 B attachment that cannot be opened.

To Reproduce Steps to reproduce the behavior:

1. Create a ZIP file with files inside.
2. Open the ZIP file in Windows Explorer.
3. Drag and drop a file from the ZIP file to the "Upload attachment" area in Nextcloud
4. There is no a 0 B attachment that cannot be opened

Expected behavior Either the file is decompressed and then uploaded correctly, or the drag & drop should not work.

Screenshots

Client details:

• OS: Window 10
• Browser Chrome
• Version 96
• Device: ThinkPad T14

Server details

I don't know most of these because the server is not administered by me

Operating system:

Web server: nginx/1.10.3

Database:

PHP version:

Nextcloud version: Nextcloud 20.0.9.1

Where did you install Nextcloud from:

Signing status:

Browser log

attachmentUpload.js:57 100
xhr.js:177 Laden von XHR beendet: POST „https://nextcloud.example.com/index.php/apps/deck/cards/492/attachment“.
(anonym) @ xhr.js:177
t.exports @ xhr.js:13
t.exports @ dispatchRequest.js:50
Promise.then (async)
c.request @ Axios.js:61
(anonym) @ bind.js:9
(anonym) @ AttachmentApi.js:41
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
z @ main.js?v=509ae40f:1602
a @ main.js?v=509ae40f:1602
(anonym) @ main.js?v=509ae40f:1602
(anonym) @ main.js?v=509ae40f:1602
(anonym) @ AttachmentApi.js:26
(anonym) @ attachment.js:83
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
G @ main.js?v=509ae40f:1602
a @ main.js?v=509ae40f:1602
(anonym) @ main.js?v=509ae40f:1602
(anonym) @ main.js?v=509ae40f:1602
createAttachment @ attachment.js:82
(anonym) @ vuex.esm.js:851
d.dispatch @ vuex.esm.js:516
dispatch @ vuex.esm.js:406
(anonym) @ attachmentUpload.js:52
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
Ye @ main.js?v=509ae40f:2161
a @ main.js?v=509ae40f:2161
(anonym) @ main.js?v=509ae40f:2161
(anonym) @ main.js?v=509ae40f:2161
(anonym) @ index.js:157
_tryToStartAnother @ index.js:105
(anonym) @ index.js:171
add @ index.js:152
(anonym) @ attachmentUpload.js:50
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
Ye @ main.js?v=509ae40f:2161
a @ main.js?v=509ae40f:2161
(anonym) @ main.js?v=509ae40f:2161
(anonym) @ main.js?v=509ae40f:2161
onLocalAttachmentSelected @ attachmentUpload.js:35
handleDropFiles @ AttachmentDragAndDrop.vue:118
drop @ AttachmentDragAndDrop.vue?be70:1
Rt @ vue.runtime.esm.js:1854
n @ vue.runtime.esm.js:2179
i._wrapper @ vue.runtime.esm.js:6917
22 weitere Frames anzeigen
util.js:130 OC.Util.relativeModifiedDate is deprecated and will be removed in Nextcloud 21. See @nextcloud/moment
relativeModifiedDate @ util.js:130
(anonym) @ init.js:96
each @ jquery.js:365
each @ jquery.js:137
(anonym) @ init.js:95
xhr.js:184 Laden von XHR beendet: GET „https://nextcloud.example.com/ocs/v2.php/apps/notifications/api/v2/notifications“.
(anonym) @ xhr.js:184
e.exports @ xhr.js:13
e.exports @ dispatchRequest.js:50
Promise.then (async)
l.request @ Axios.js:61
r.forEach.l.<computed> @ Axios.js:76
(anonym) @ bind.js:9
(anonym) @ notificationsService.js:64
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
D @ notifications-main.js?v=509ae40f:284
i @ notifications-main.js?v=509ae40f:284
(anonym) @ notifications-main.js?v=509ae40f:284
(anonym) @ notifications-main.js?v=509ae40f:284
(anonym) @ notificationsService.js:53
(anonym) @ notificationsService.js:39
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
D @ notifications-main.js?v=509ae40f:284
i @ notifications-main.js?v=509ae40f:284
(anonym) @ notifications-main.js?v=509ae40f:284
(anonym) @ notifications-main.js?v=509ae40f:284
(anonym) @ notificationsService.js:26
(anonym) @ App.vue:225
c @ runtime.js:45
(anonym) @ runtime.js:274
forEach.e.<computed> @ runtime.js:97
O @ notifications-main.js?v=509ae40f:303
i @ notifications-main.js?v=509ae40f:303
(anonym) @ notifications-main.js?v=509ae40f:303
(anonym) @ notifications-main.js?v=509ae40f:303
_fetch @ App.vue:224
_backgroundFetch @ App.vue:255