opening a closed way is not obvious when using P or G

[Pierre Beyssac]

What steps will reproduce the problem?

1. Create new way: 3 nodes or more, circular (closed)
2. Unselect
3. Select the way + 1 node
4. Try splitting the way with "p"

What is the expected result?

One of:

• the same effect than "G" would have (but "G" only seems to work on the begin/end node, not on any node of the closed way)
• or an error message recommending instead to use "G" + extending "G" to be able to cut a closed way at any point

What happens instead?

Error message "you have to select 2 nodes or more to cut a closed way"
(sorry, back translated from the French version "Vous devez sélectionner 2 points ou plus pour couper un chemin fermé"

Please provide any additional information below. Attach a screenshot if possible.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-08-18 16:16:51 +0200 (Sat, 18 Aug 2018)
Build-Date:2018-08-18 16:30:21
Revision:14163
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14163 fr) FreeBSD
Memory Usage: 2040 MB / 3630 MB (580 MB allocated, but free)
Java version: 1.8.0_172-b11, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ apache-commons (34506)
+ cadastre-fr (34576)
+ continuosDownload (1530471163)
+ ejml (34389)
+ geotools (34513)
+ jts (34524)
+ public_transport (34548)

Tagging presets:
+ http://josm.openstreetmap.de/josmfile?page=Presets/PublicTransportOneClick&preset

Validator rules:
+ resource://data/validator/power.mapcss

Last errors/warnings:
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out