Can not sync edited remote share file

[nickvergessen]

Sync client problem

1. Create two user
2. As user1 create file test.txt
3. As user1 share file test.txt with user2@localhost
4. As user2 accept the share
5. Start a sync client for user2
6. Sync files for user2 with the client
7. As user2 edit the file
8. Sync files for user2 with the client

Expected

The file is updated

Actual

The file is kept as before and a conflict file is generated.

Client log:

#=#=#=# Syncrun started 2015-05-20T15:44:13 until 2015-05-20T15:44:13 (381 msec)
|0|test.txt|INST_SYNC|Up|1432129451|555c8f9e6ec0d|31||3|Error downloading http://localhost/ownCloud/master/core/remote.php/webdav/test.txt - server replied: Precondition failed (An If-Match header was specified, but none of the specified the ETags matched.)|0|23|1432129183|555c8f9e6ec0d|00000041oc6erbfm5lll|INST_NONE|

What's also interesting is that on each sync-poll the client reports that "test.txt has been downloaded"

#=#=#=# Syncrun started 2015-05-20T15:42:58 until 2015-05-20T15:42:58 (372 msec)
13:42:58|209|test.txt|INST_SYNC|Down|1432129183|555c8f602a31e|23|00000041oc6erbfm5lll|4||0|23|1432129183|555c8f08798b9||INST_NONE|
#=#=#=# Syncrun started 2015-05-20T15:43:58 until 2015-05-20T15:43:58 (395 msec)
13:43:58|222|test.txt|INST_SYNC|Down|1432129183|555c8f9c20b7a|23|00000041oc6erbfm5lll|4||0|23|1432129183|555c8f627877d||INST_NONE|

PS: just tested and this also happens on stable8 😦

[nickvergessen]

Well I guess it's a duplicate of #14726

[PVince81]

Actually a duplicate of #15125 where I managed to reproduce (and fix) this issue