Changeset contains unmodified ways if node was added and removed again

[Famlam]

What steps will reproduce the problem?

1. Download any area of the map containing at least a way
2. Add a node somewhere in the middle of this way (closed or unclosed)
3. Delete this same node again

What is the expected result?

Changeset contains no changes (as the way has been restored to its original)

What happens instead?

Changeset reports the way has changed

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: 2019-07-10 00:52:47 +0200 (Wed, 10 Jul 2019)
Build-Date:2019-07-10 01:30:51
Revision:15238
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15238 nl) Windows 8.1 64-Bit
OS Build number: Windows 8.1 (9600)
Memory Usage: 259 MB / 989 MB (136 MB allocated, but free)
Java version: 1.8.0_211-b12, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1600x900
Maximum Screen Size: 1600x900
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (34977)
+ changeset-viewer (22)
+ tageditor (34977)
+ turnlanes-tagging (281)
+ utilsplugin2 (34977)

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1

Validator rules:
+ https://josm.openstreetmap.de/josmfile?page=Rules/KeepRight&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Rules/OSMLint&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Rules/OsmoseValidations&zip=1

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.

[stoecker]

JOSM does not track the original state, so it can't know that you reversed a change. If you want to be sure to not upload no-changes, you need to call Update Modified function before an upload. It will remove such cases from the change list.