Created attachment 146457 [details]
Example odt that cannot be opened again

With current master LO saving to a Sharepoit share results in a file that is continously "locked" for editing. This happens with odt and docx as well, and on opening in LO or Word as well.

To reproduce: 
- Save a new file on a Sharepoint share
- Try to edit it and resave: a window tells there is no permission to write the file.
- Or close it and reopen with LO or Word: a window tells the file is already open by unknown user.

Bibisected with bibisect-win32-6.2 :

git bisect log
# bad: [abecf7aba70fbb5b08acfc14e1c54be2c8c69662] source 2cef68a605494bcef0388201b1058c95788c45a8
# good: [b0a56ec98b1368cb5e3e531e0b3f69565af91609] source 3a801799536e6870f2fb111b1cc00b9575a35a39
git bisect start 'origin/master' 'oldest'
# good: [9dcaa23557006e78ed974fea7109eb7e5c384bcc] source f71f16b742faa75fe0cab6b899b99ee42d5ec6c7
git bisect good 9dcaa23557006e78ed974fea7109eb7e5c384bcc
# good: [40af77e5ab85dc2093a3e09b05ec67649756652e] source 79cb9ef524c3a6b058019da5ca6acfad7a895bf2
git bisect good 40af77e5ab85dc2093a3e09b05ec67649756652e
# good: [40af77e5ab85dc2093a3e09b05ec67649756652e] source 79cb9ef524c3a6b058019da5ca6acfad7a895bf2
git bisect good 40af77e5ab85dc2093a3e09b05ec67649756652e
# bad: [9c68d1036dcfeab7612135bac1584bb7a16932a9] source 0ed250a9ac4f278ce9ecf12fe1fc9e0c7142fbe4
git bisect bad 9c68d1036dcfeab7612135bac1584bb7a16932a9
# bad: [14d04434e17b2a01f3119a7889f9fde193650f34] source 689b6a6ceb88b2c074b77c1030bc2396a1816eea
git bisect bad 14d04434e17b2a01f3119a7889f9fde193650f34
# bad: [14d04434e17b2a01f3119a7889f9fde193650f34] source 689b6a6ceb88b2c074b77c1030bc2396a1816eea
git bisect bad 14d04434e17b2a01f3119a7889f9fde193650f34
# bad: [8460501e06eaf32b80d2931b605a0c499d5120eb] source 1e79f6f01a8afc55a455b0c52fd5cf2b766e1e08
git bisect bad 8460501e06eaf32b80d2931b605a0c499d5120eb
# bad: [4b50f2299312bb2a66e9d98e6fc80fbbe51c3341] source 4ffb89466ff9e70678e807b7d29d94aa34d52bfe
git bisect bad 4b50f2299312bb2a66e9d98e6fc80fbbe51c3341
# good: [8857114212c34e8dd7cf1fa7d35667cf0656110c] source 9a639b7130e98fb24d492ed03770bbe0a48cb3e6
git bisect good 8857114212c34e8dd7cf1fa7d35667cf0656110c
# good: [2fa817dbf37120cb2af5b9abfbd1a4922dd54010] source 27a2de0bd3f1cf64b9ad3a84b112968941ce6d8e
git bisect good 2fa817dbf37120cb2af5b9abfbd1a4922dd54010
# bad: [d47e9524191ca6297436df8168768fc9873908b5] source a6a4fa526b8ad19ff6d44a89ee56d4268c8e90be
git bisect bad d47e9524191ca6297436df8168768fc9873908b5
# bad: [00aca4cf9c5eba2285b2959bf7aad63a7c34d600] source 38cdfcd55f05058e2adfe5bf01e85ca5417649af
git bisect bad 00aca4cf9c5eba2285b2959bf7aad63a7c34d600
# good: [5f39e00793b562820243d8f7063c6b3b98b0eb4f] source bfd2393ca7247aae1b09e661610a5f750b6e06fa
git bisect good 5f39e00793b562820243d8f7063c6b3b98b0eb4f
# bad: [7f76298f730edd25d8b0d1e08d12c23297c4229d] source 4d382636b0b1c555af2b98f2f41b4776fd7b5ffb
git bisect bad 7f76298f730edd25d8b0d1e08d12c23297c4229d
# bad: [96a19ce51f497aca182fdc38a6eb0c478e50d067] source c9343988204ee3e9889f3cc833adbbaca83e53e6
git bisect bad 96a19ce51f497aca182fdc38a6eb0c478e50d067
# first bad commit: [96a19ce51f497aca182fdc38a6eb0c478e50d067] source c9343988204ee3e9889f3cc833adbbaca83e53e6

https://gerrit.libreoffice.org/gitweb?p=core.git&a=log&h=c9343988204ee3e9889f3cc833adbbaca83e53e6

Adding CC to Mike Kaganski.