Multiple monitor issue

[BrackoNe]

What steps will reproduce the problem?

1. I have three monitors
2. If I move main window of JOSM to any monitor that is not primary, when it opens any dialog (e.g. Add value?, Change value, etc) it opens to primary monitor. Sometimes you don't know that even is opened to other monitor especialy if you have many apps open and you are waiting for very small dialog like it is Change value.

What is the expected result?

1. I expect to get new window/dialog in the center of Java OpenStreetMap Editor main window, not at the other monitor.

What happens instead?

1. Any dialog is opened to primary monitor even the main app isn't at that monitor.

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

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-12-31 03:09:43 +0100 (Sun, 31 Dec 2017)
Build-Date:2017-12-31 02:33:46
Revision:13265
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13265 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1709 (16299)
Memory Usage: 668 MB / 910 MB (182 MB allocated, but free)
Java version: 1.8.0_144-b01, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080, \Display1 1920x1080, \Display2 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ geojson (73)
+ imagery_offset_db (33774)
+ tageditor (33806)
+ turnlanes-tagging (260)
+ turnrestrictions (33780)

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

Last errors/warnings:
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet

[BrackoNe]

Tripple Monitor Issue

[stoecker]

Your screen setup looks ok. JOSM remembers the place where dialogs are shown. Does this always happen again even when you move it back to the right screen and finish it there (I'm not sure if a dialog abort also remembers position).

Try removing stored dialog sizes: Search for geometry in expert preferences and delete the entries. They look like org.openstreetmap.josm.gui.dialogs.LatLonDialog.geometry and have values like x=541,y=270,width=831,height=503.

Please report results.