File copy fails when it has kernel extended attribute on Windows

[XP1]

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Summary

Create an automatically saved screenshot using Snipping Tool when Avast File Shield is enabled

What software is involved?

• Operating System: Windows 11 22631.2861
• Cryptomator: 1.11.0 msi-4970
• Snipping Tool: 11.2310.54.0
• Avast: 23.12.6094 (build 23.12.8700.813)

Volume Type

WinFsp

Steps to Reproduce

1. Make sure Avast File Shield is enabled: Protection > Core Shields > File Shield.
2. Press the Print Screen key to activate the Snipping Tool and create a screenshot. Make sure it automatically saved to the %UserProfile%\Pictures\Screenshots folder.
3. Avast adds a $KERNEL.PURGE.ASWAV kernel extended attribute to the file. Observe using:

fsutil file queryea "Screenshot 2024-01-04 053005.png"

Extended Attributes (EA) information for file C:\Users\User\Pictures\Screenshots\Screenshot 2024-01-04 053005.png:

Total Ea Size: 0x4c

Ea Buffer Offset: 0
Ea Name: $KERNEL.PURGE.ASWAV
Ea Value Length: 30
0000:  01 2e 00 00 00 00 00 00  00 00 00 00 00 00 00 10  ................
0010:  b3 ec 99 f3 22 9e d9 fd  03 c1 50 df c3 ad 98 f7  ....".....P.....
0020:  00 95 39 97 61 10 3f 69  85 f0 27 76 41 43 4d 34  ..9.a.?i..'vACM4

5. Try to copy the "Screenshot ....png" file to a vault.

Expected Behavior

File copied successfully.

Actual Behavior

File created has 0 bytes.

File Explorer errors:

The destination already has a file named "..."

Destination Folder Access Denied
You need permission to perform this action

Log error:

create /Screenshot 2024-01-04 053005.png failed, file already exists.

Reproducibility

Always

Relevant Log Output

06:16:56.426 [Thread-12] TRACE o.c.frontend.fuse.ReadWriteAdapter - create /Screenshot 2024-01-04 053005.png with flags [READ, WRITE, CREATE_NEW]
06:16:56.433 [Thread-12] TRACE o.c.cryptofs.fh.FileHeaderHolder - Generating file header for C:\Users\User\TestVault\d\XP\XZRBHQAG57G7OWD4G5CCLGLAFEIMK6\HJXs0f3F-9GT2jjD38hsdkI3LdvgpwenS57c9ZwJx2mNskgZnDRVStMD4x-FYDUd.c9r
06:16:56.434 [Thread-12] DEBUG o.c.c.common.ReseedingSecureRandom - Seeding CSPRNG with 55 bytes...
06:16:56.434 [Thread-12] DEBUG o.c.c.common.ReseedingSecureRandom - Seeded CSPRNG.
06:16:56.437 [Thread-12] TRACE o.c.cryptofs.fh.OpenCryptoFile - First channel for this openFile. Initializing file size...
06:16:56.439 [Thread-12] TRACE o.c.frontend.fuse.OpenFileFactory - Opening 1 OpenFile{path=/Screenshot 2024-01-04 053005.png, channel=org.cryptomator.cryptofs.ch.CleartextFileChannel@912f70f}
06:16:56.440 [Thread-12] TRACE o.c.frontend.fuse.ReadWriteAdapter - setxattr /Screenshot 2024-01-04 053005.png $KERNEL.PURGE.ASWAV
06:16:56.440 [Thread-12] TRACE o.c.frontend.fuse.ReadOnlyAdapter - release /Screenshot 2024-01-04 053005.png (1)
06:16:56.440 [Thread-12] TRACE o.c.frontend.fuse.OpenFileFactory - Releasing 1 OpenFile{path=/Screenshot 2024-01-04 053005.png, channel=org.cryptomator.cryptofs.ch.CleartextFileChannel@912f70f}
06:16:56.441 [Thread-12] TRACE o.c.cryptofs.ch.CleartextFileChannel - org.cryptomator.cryptofs.ch.CleartextFileChannel@912f70f - Writing file header.
06:16:56.442 [Thread-12] TRACE o.c.frontend.fuse.ReadOnlyAdapter - getattr / (lastModifiedTime: 2024-01-04T11:16:56.4330484Z, lastAccessTime: 2024-01-04T11:16:56.4330484Z, creationTime: 2024-01-04T04:31:00.0510018Z, isRegularFile: false, isDirectory: true, isSymbolicLink: false, isOther: false, size: 20480, fileKey: null)
06:16:56.442 [Thread-12] TRACE o.c.frontend.fuse.ReadWriteAdapter - create /Screenshot 2024-01-04 053005.png with flags [READ, WRITE, CREATE_NEW]
06:16:56.443 [Thread-12] WARN  o.c.frontend.fuse.ReadWriteAdapter - create /Screenshot 2024-01-04 053005.png failed, file already exists.

Anything else?

No response

[XP1]

Updated to 1.11.1.4989. Bug already fixed: #3207 (comment)