JOSM freezes when clicking "Report bug" in the menu bar

[floscher]

What steps will reproduce the problem?

1. Start JOSM
2. Click Help › Report bug in the menu bar

What is the expected result?

The JOSM website opens with the form for creating a new ticket.

What happens instead?

JOSM freezes and can only be closed by killing the processes josm and java

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

OS: Ubuntu 15.10 64-bit
Java: OpenJDK 8 64-bit
JOSM: r9329 without plugins and even after I deleted the ~/.josm-folder

Command line output is this:

Using /usr/lib/jvm/java-8-openjdk-amd64/bin/java to execute josm.
INFO: Nutzbares IPv6-Netzwerk erkannt, bevorzuge IPv6 vor IPv4.
INFO: Öffne URL: https://josm.openstreetmap.de/josmticket?gdata=H4sIAAAAAAAAAE2RQXObMBCF7_yKPdpTAxJgQTTTi-NLXDPpxEN6yKQdGTaOWpAYaWGSf1_B9NCTpKd9q--tmqezfCcaZZr-tn5I7IjGk0OkQY1Jh6mfTUpuMn-iJxyt12Tdp2yah6ME1gos90UWt4LxmBWcxVWBZdyyvFLYVdU1v0Zn5Unevytzww6OilBCxriIF4cAXsqcyZzDF8YZg80P7HYQ9JMya9k2Oky67-LV-L9PyDwLvgA1a6-tkXd5dhdOvSI9o2xCLPj5Dzx66NCQftNtuAylcHq81ClP9rBZXNDhFs7aTB_QXCdDE_B9wllU4xCyQuPVbYEuBdQHSANyWSy7TZZVy6r63obGC_h1IngLs9tGJzUrmNGtaMCTKmG_hIi1IXRG9Tt4dKrtEe6tG61bsYIWZn86fgNRxAdNcEEXOsBzHT3XoNxtGkIKL-ElPq5f5dCTcvQ1hMQdBDG8mRikZPJ4-fSEw3dnPzT6teL1L0_2NbfqAQAA
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
java: ../../src/xcb_io.c:274: poll_for_event: Zusicherung »!xcb_xlib_threads_sequence_lost« nicht erfüllt.

[floscher]

The command line output varies a bit.

Sometimes it is only the first three rows, then I have to kill -TERM $josmProcess && kill -KILL $javaProcess. Sometimes the output is like above and JOSM closes after freezing for about half a minute.

[simon04]

#12308 seems highly related.

[mdk]

see also #12145

[Don-vip]

can you please try again after disabling Gnome ATK Wrapper? (see #12022)

[mdk]

CONGRATULATIONS!

You got it! Disabling the Gnome ATK Wrapper not only fixes the mess in all kinds of lists (#12022), but also the freezing when sending an URL to the browser (#12331, #12145).

Can we disable this feature in the start script?

[floscher]

Thank you! This fixed both problems I mentioned here and in #12332.