[O] Bug: External links buggy with 8.3.1 [8.3.1 (8.3.1-dist @ c:/org-mode/org/)]

[AW]

To: address@hidden
Subject: Bug: External links buggy with 8.3.1 [8.3.1 (8.3.1-dist @ c:/org-
mode/org/)]
From: address@hidden
--text follows this line--

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     http://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org-mode mailing list.
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I'm using link abbrevations. The abbrevations are stored in a file and
this file is loaded in my .emacs. I hit this bug only on Windows 8.1,
not under Linux. 

Code of abbrevations as example:

(setq org-link-abbrev-alist
   (if (eq system-type 'windows-nt)
      '(("NameA" . "//Sbs2011/Bilder/2011/271-2011/%s")
        ("NameB" .      "//Sbs2011/Bilder/2012/351-2012/%s")
)
      '(("NameA" . "/home/AW/Dokumente/2011-271/%s")
        ("NameB" .      "/home/AW/Dokumente/2012-351/%s")
)))

With orgmode 8.2.10 the links work. Example for link: [[NameA:filename.pdf]
[whatever]]

With orgmode 8.3.1 I get the message e.g.:

user-error: No such file: u:/Sbs2011/Bilder/2011/271-2011/filename.pdf

You see, orgmode 8.3.1 modifies for no apparent reason the link from
"//sbs2011..." to "u:/sbs2011..."

The share "u:" exists, HOME is u:/emacs. This is the orgmode version from 
orgmode.org, not elpa. 

Emacs  : GNU Emacs 25.0.50.5 (x86_64-w64-mingw32)
 of 2015-09-21 on PC-21-W8
Package: Org-mode version 8.3.1 (8.3.1-dist @ c:/org-mode/org/)

current state:
==============
(setq
 org-tab-first-hook '(org-hide-block-toggle-maybe
                      org-babel-hide-result-toggle-maybe
                      org-babel-header-arg-expand)
 org-speed-command-hook '(org-speed-command-default-hook
                          org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-confirm-shell-link-function 'yes-or-no-p
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
                     org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-mode-hook '(#[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook org-show-block-all
                    append local]
                   5]
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook
                    org-babel-show-result-all append local]
                   5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
                          org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
 org-link-abbrev-alist       '(("NameA" . "//Sbs2011/Bilder/2011/271-2011/%s")
                            ("NameB" .      
"//Sbs2011/Bilder/2012/351-2012/%s")
);;; CAVE: I deleted the real output and wrote my example !!!!!!!!!!!!
 org-confirm-elisp-link-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-agenda-files '("u:/Emacs/Sonstiges.org" "u:/Emacs/this.org"
                    "u:/Emacs/that.org" "u:/Emacs/Privat.org"
                    )
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 )
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