Always have "between node dragging handle that will create a new node" visible

[mkoniecz]

What steps will reproduce the problem?

1. Have way with very long length (compared to viewscreen) between two nodes
2. Try to use drag handle between nodes on a long way (and long ways are more likely to require to use it)

What is the expected result?

Drag handle is in the middle between visible node and edge of screen (AFAIK iD is doing this) for ways where one node is outside screen - with exception of ways where only tiny chunk is visible on screen

What happens instead?

I need to zoom out use handle, zoom in. Sometimes with multiple steps to bring node withing editing area

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-08-07 18:58:40 +0200 (Fri, 07 Aug 2020)
Revision:16853
Build-Date:2020-08-08 01:30:49
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (16853 en_GB) Linux Ubuntu 20.04.1 LTS
Memory Usage: 655 MB / 976 MB (110 MB allocated, but free)
Java version: 11.0.8+10-post-Ubuntu-0ubuntu120.04, Ubuntu, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 1920x1080 (scaling 1.0x1.0)
Maximum Screen Size: 1920x1080
Best cursor sizes: 16x16 -> 16x16, 32x32 -> 32x32
Java package: openjdk-11-jre:amd64-11.0.8+10-0ubuntu1~20.04
Java ATK Wrapper package: libatk-wrapper-java:all-0.37.1-1
libcommons-logging-java: libcommons-logging-java:all-1.2-2
fonts-noto: fonts-noto:-
Dataset consistency test: No problems found

Plugins:
+ buildings_tools (35500)
+ measurement (35405)
+ reverter (35499)
+ todo (30306)