Routing helper assistant got confused

[Polyglot]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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: 2018-07-24 01:20:01 +0200 (Tue, 24 Jul 2018)
Build-Date:2018-07-24 02:23:01
Revision:14046
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14046 en) Linux Mint 18.3 Sylvia
Memory Usage: 1218 MB / 2267 MB (786 MB allocated, but free)
Java version: 1.8.0_171-8u171-b11-0ubuntu0.16.04.1-b11, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 1600x900
Maximum Screen Size: 1600x900
Java package: openjdk-8-jre:amd64-8u171-b11-0ubuntu0.16.04.1

Dataset consistency test:
[NO DATASET] {Way id=-2451667 version=0 VT> nodes=[{Node id=925374599 version=1 V lat=43.9419355,lon=4.8070047}, {Node id=1804356809 version=2 Vd lat=43.9419443,lon=4.8070086}]} is referenced by {Relation id=3148403 version=51 MVT [node 2420681386, node 2421475169, node 4907828859, node 4902396123, node 4907828863, node 4907828867, node 4907828876, node 4907828878, node 4907828880, node 4907828883, node 4907828887, node 4907828885, node 4907828890, node 4907828892, node 1985823474, node 4907828893, node 4907828894, node 2445903202, node 2445903214, node 1721632356, node 1721632278, node 4822825504, node 4907828889, way 499514041, way 499514040, way 499514039, way 10413148, way 10413150, way 10413153, way 10413154, way 499514060, way 10413361, way 10413364, way 499514044, way 183601398, way 183601386, way 183601396, way 499514068, way 499514067, way 499514042, way 233818930, way 599835328, way 222129515, way 47427565, way 10413365, way 47427563, way 47427562, way 222129520, way 183664475, way 499514059, way 183664478, way 183664482, way 160567039, way 222129519, way 222120685, way 222120687, way 222120684, way 222120681, way 222120016, way 499514070, way 222120014, way 343074038, way 169169398, way 169169397, way 47427459, way 10374208, way 47427461, way 169169392, way 169169389, way 169169393, way 169169394, way 169169390, way 160567033, way 544981379, way 422976899, way 422976898, way 422976897, way 419755165, way 27478842, way 27478843, way 419755167, way 163026007, way 163026009, way 11367015, way 27478836, way 27478814, way 27478832, way 222122591, way 30082111, way 43161254, way 499514057, way 499514055, way 43161255, way 115433578, way 389598804, way 577847509, way 410105408, way 236372101, way 236372102, way 346626200, way 103921699, way 103921720, way 388545230, way 577847508, way 190288101, way 577847507, way 499514054, way 190288103, way 499514074, way 499514075, way 499514076, way 499514077, way 190288100, way 346980672, way 346980661, way 499514065, way 190290329, way 346980667, way 71271036, way 190490923, way 190490922, way 95400414, way 95400417, way 43981543, way 499514052, way 22803585, way 22803586, way 268235780, way 32094429, way 22803583, way 28500204, way 73037787, way 73037768, way 269379443, way 269376083, way 499514064, way 499514063, way 499514066, way 73193807, way 28500202, way 28500192, way 71270973, way 268235766, way 28500188, way 152530153, way 152530149, way 269376084, way 261567534, way 243232666, way 28500186, way 187953491, way 187953494, way 82859503, way 499514051, way 499514049, way 28500185, way 82857751, way 351270752, way 190063203, way 190063204, way 577847506, way 71271013, way 71270960, way 165508099, way 76910892, way 76910896, way 432838033, way 28500184, way 27601590, way 27601589, way 432760210, way 457124588, way 30082130, way 276252304, way 90184877, way 154784161, way 200183005, way 233819352, way 603132686, way 432841713, way 154784183, way 248195916, way 243232674, way 432841711, way 440159526, way 406469109, way 448677460, way 43982516, way 432841708, way 432841704, way 43985979, way 43983414, way 457110560, way 165601317, way 440159529, way 205336375, way 315370571, way 165601322, way 28208623, way 457099865, way 183023812, way 409115180, way 409115182, way 409115178, way 498956209, way 234300662, way 183024170, way 457097510, way 83274271, way 154816797, way 315336147, way 183024171, way 154816700, way 154816703, way 181779084, way 236739117, way 154816705, way 237194260, way 79213528, way 79213546, way 490164527, way 499369697, way 587888936, way 587722142, way 311787878, way 79213544, way -2451667, way 169268843, way 169268847, way 154816777, way 60442047, way 456875874, way 88837183, way 4235748, way 184646955, way 499514048, way 131737541]} but not found in dataset


Plugins:
+ Mapillary (v1.5.15)
+ OpeningHoursEditor (34389)
+ apache-commons (34389)
+ apache-http (34389)
+ buildings_tools (34212)
+ ejml (34389)
+ geotools (34125)
+ jts (34206)
+ measurement (34206)
+ opendata (34389)
+ pt_assistant (306)
+ reverter (34271)
+ scripting (30785)
+ tag2link (34109)
+ terracer (34109)
+ todo (30305)
+ utilsplugin2 (34389)
+ wikipedia-dev (v1.0.1-43-gb77c0c5)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/BENELUX&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Trees&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/OneClick&zip=1

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

Last errors/warnings:
- W: java.net.SocketTimeoutException: connect timed out
- E: java.net.SocketTimeoutException: connect timed out
- W: java.net.SocketTimeoutException: Read timed out
- E: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: connect timed out
- E: java.net.SocketTimeoutException: connect timed out
- W: org.openstreetmap.josm.io.OsmTransferException: Could not connect to the OSM server. Please check your internet connection.. Cause: java.net.SocketTimeoutException: connect timed out
- W: java.net.SocketTimeoutException: connect timed out
- E: java.net.SocketTimeoutException: connect timed out
- E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Relation member must be part of the same dataset as relation(relation 3148403, way -2451667)


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (18) of main
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Relation member must be part of the same dataset as relation(relation 3148403, way -2451667)
	at org.openstreetmap.josm.data.osm.Relation.checkMembers(Relation.java:470)
	at org.openstreetmap.josm.data.osm.Relation.fireMembersChanged(Relation.java:488)
	at org.openstreetmap.josm.data.osm.Relation.setMembers(Relation.java:59)
	at org.openstreetmap.josm.data.osm.Relation.cloneFrom(Relation.java:243)
	at org.openstreetmap.josm.command.ChangeCommand.executeCommand(ChangeCommand.java:65)
	at org.openstreetmap.josm.data.UndoRedoHandler.addNoRedraw(UndoRedoHandler.java:234)
	at org.openstreetmap.josm.data.UndoRedoHandler.add(UndoRedoHandler.java:262)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.SavingAction.applyExistingNonConflictingRelation(SavingAction.java:104)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.SavingAction.applyChanges(SavingAction.java:177)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.ApplyAction.actionPerformed(ApplyAction.java:31)
	at org.openstreetmap.josm.gui.dialogs.relation.GenericRelationEditor.apply(GenericRelationEditor.java:343)
	at org.openstreetmap.josm.plugins.pt_assistant.actions.MendRelationAction.save(MendRelationAction.java:1591)
	at org.openstreetmap.josm.plugins.pt_assistant.actions.MendRelationAction.getNextWayAfterSelection(MendRelationAction.java:1548)
	at org.openstreetmap.josm.plugins.pt_assistant.actions.MendRelationAction$4.keyPressed(MendRelationAction.java:1241)
	at java.awt.Component.processKeyEvent(Component.java:6491)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2832)
	at java.awt.Component.processEvent(Component.java:6310)
	at java.awt.Container.processEvent(Container.java:2238)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2296)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:835)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1103)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:974)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:800)
	at java.awt.Component.dispatchEventImpl(Component.java:4760)
	at java.awt.Container.dispatchEventImpl(Container.java:2296)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
	at java.awt.EventQueue$4.run(EventQueue.java:733)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)