--- old/src/java.base/share/classes/java/time/format/DateTimeFormatter.java	2016-02-25 18:40:41.226671501 +0300
+++ new/src/java.base/share/classes/java/time/format/DateTimeFormatter.java	2016-02-25 18:40:39.185671501 +0300
@@ -923,6 +923,7 @@
      * <li>The {@link #ISO_LOCAL_DATE_TIME}
      * <li>The {@link ZoneOffset#getId() offset ID}. If the offset has seconds then
      *  they will be handled even though this is not part of the ISO-8601 standard.
+     *  The offset parsing is lenient, which allows the minutes and seconds to be optional.
      *  Parsing is case insensitive.
      * </ul>
      * <p>
@@ -935,7 +936,9 @@
         ISO_OFFSET_DATE_TIME = new DateTimeFormatterBuilder()
                 .parseCaseInsensitive()
                 .append(ISO_LOCAL_DATE_TIME)
+                .parseLenient()
                 .appendOffsetId()
+                .parseStrict()
                 .toFormatter(ResolverStyle.STRICT, IsoChronology.INSTANCE);
     }
 
@@ -1160,6 +1163,7 @@
      * <li>If the offset is not available to format or parse then the format is complete.
      * <li>The {@link ZoneOffset#getId() offset ID} without colons. If the offset has
      *  seconds then they will be handled even though this is not part of the ISO-8601 standard.
+     *  The offset parsing is lenient, which allows the minutes and seconds to be optional.
      *  Parsing is case insensitive.
      * </ul>
      * <p>
@@ -1178,7 +1182,9 @@
                 .appendValue(MONTH_OF_YEAR, 2)
                 .appendValue(DAY_OF_MONTH, 2)
                 .optionalStart()
+                .parseLenient()
                 .appendOffset("+HHMMss", "Z")
+                .parseStrict()
                 .toFormatter(ResolverStyle.STRICT, IsoChronology.INSTANCE);
     }