Does this help? I don't have an SVN repository to test.
diff --git a/lisp/vc/vc-svn.el b/lisp/vc/vc-svn.el
index 270877041a..f240ebafca 100644
--- a/lisp/vc/vc-svn.el
+++ b/lisp/vc/vc-svn.el
@@ -366,7 +366,7 @@ vc-svn-ignore-completion-table
(with-temp-buffer
(when (zerop (vc-svn-command
t t nil "propget" "svn:ignore" (expand-file-name
directory)))
- (split-string (buffer-string) "\n"))))
+ (split-string (buffer-string) "\n" t))))
(defun vc-svn-find-admin-dir (file)
"Return the administrative directory of FILE."