Wrong behavior of autocomplete in text boxes

[naoliv]

Create two highways, one name "Street Foosomething" and another "St. Foo"
Double click to edit "St. Foo", remove the dot and type "reet" (to form "Street").
Now if the user press Enter he has a wrongly street named as "Street Foosomething" instead "Street Foo" (because the autocomplete wrongly completed the last part of the street name)

[skyper]

Can reproduce

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2014-01-09 02:35:12
Last Changed Author: bastiK
Revision: 6656
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2014-01-08 22:50:30 +0100 (Wed, 08 Jan 2014)
Last Changed Rev: 6656

Identification: JOSM/1.5 (6656 en) Linux Debian GNU/Linux 7.3 (wheezy)
Memory Usage: 521 MB / 672 MB (252 MB allocated, but free)
Java version: 1.7.0_25, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u25-2.3.10-1~deb7u1
Dataset consistency test: No problems found

Plugin: OpeningHoursEditor (30117)
Plugin: conflation (0.1.6)
Plugin: jts (29854)
Plugin: mirrored_download (30162)
Plugin: notes (v0.8)
Plugin: photoadjust (30180)
Plugin: reverter (30031)
Plugin: terracer (30141)
Plugin: todo (29155)
Plugin: undelete (29854)
Plugin: utilsplugin2 (30177)
Plugin: wikipedia (30125)

[simon04]

In 8268/josm:

fix #9533 - Do not autocomplete in combo boxes unless cursor is at the end