Listening to radio on the web browser crash if facebook app is on

Is there any crash file under /var/crash/ for webbrowser-app? If so, can you please attach it to this bug report? Thanks!

I’ve just listened to the audio stream for France Info on my MX4 running the latest rc-proposed for the past 30 minutes without any crash.

Thank you for your prompt response!
I tried to reproduce the bug. First I could not.
I looked at the /var/crash/ and found one older crash report (not the right timing with what I saw yesterday) about a bug linked to the facebook app and not the web-browser.
I tried again to listen to the radio with the facebook app opened and this time I got a bug at some point (took me longer than last time) and it seems to be linked to the facebook app refreshing itself or possibly getting notifications.
I attach the crash report from /var/crash in the following: (sorry for the long copy paste, i did not found a way to attach a file here)
Btw, even if I saw multiple crashes today also, I can only see one crash report related to the first crash I saw in the /var/crash. I actually had to rename the old crash report to get to see the new one, which I guess explains what I was explaining at the beginning of the message by not being able to see the crash of yesterday but only seeing the one before that.

ProblemType: RecoverableProblem
Architecture: armhf
BadURL: intent://threads/?vcuid=677313772&src=mtouch_diode&show_multiaccount=true#Intent;scheme=fb-messenger;package=com.facebook.orca;end
CurrentDesktop: Unity
Date: Fri Jun 10 10:41:57 2016
DistroRelease: Ubuntu 15.04
DuplicateSignature: /usr/bin/webapp-container:url-dispatcher-bad-url
ExecutablePath: /usr/bin/webapp-container
ExecutableTimestamp: 1462817536
ProcCmdline: webapp-container --enable-back-forward --accountProvider=facebook --popup-redirection-url-prefix=http://lm.facebook.com/l.php?u= --webapp=ZmFjZWJvb2s= --webappModelSearchPath=. https://m.facebook.com/
ProcCwd: /opt/click.ubuntu.com/com.ubuntu.developer.webapps.webapp-facebook/1.2.3
ProcEnviron:
 PATH=(custom, no user)
 TERM=linux
 LANGUAGE=en_US:en
 LD_LIBRARY_PATH=<set>
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcMaps:
 27263000-27273000 rw-p 00000000 00:00 0
 2985d000-2986d000 rw-p 00000000 00:00 0
 2d53b000-2d54b000 rw-p 00000000 00:00 0
 466f9000-46709000 rw-p 00000000 00:00 0
 4a600000-4a601000 ---p 00000000 00:00 0
 4a601000-4a602000 rw-p 00000000 00:00 0
 4a602000-4a604000 ---p 00000000 00:00 0
 4a604000-4a7fc000 rw-p 00000000 00:00 0
 4a7fc000-4a800000 ---p 00000000 00:00 0
 5d989000-5d999000 rw-p 00000000 00:00 0
 5ea00000-5ea01000 ---p 00000000 00:00 0
 5ea01000-5ea02000 rw-p 00000000 00:00 0
 5ea02000-5ea04000 ---p 00000000 00:00 0
 5ea04000-5ebfc000 rw-p 00000000 00:00 0
 5ebfc000-5ec00000 ---p 00000000 00:00 0
 873be000-873fe000 rw-s 003a1000 00:05 2228 /dev/pvrsrvkm
 873fe000-8743e000 rw-s 0039b000 00:05 2228 /dev/pvrsrvkm
 8743e000-8747e000 rw-s 00395000 00:05 2228 /dev/pvrsrvkm
 8747e000-874be000 rw-s 0038f000 00:05 2228 /dev/pvrsrvkm
 874be000-874fe000 rw-s 00389000 00:05 2228 /dev/pvrsrvkm
 874fe000-8753e000 rw-s 00386000 00:05 2228 /dev/pvrsrvkm
 8753e000-8757e000 rw-s 00380000 00:05 2228 /dev/pvrsrvkm
 8757e000-875be000 rw-s 0037d000 00:05 2228 /dev/pvrsrvkm
 875be000-875fe000 rw-s 00377000 00:05 2228 /dev/pvrsrvkm
 875fe000-8763e000 rw-s 00374000 00:05 2228 /dev/pvrsrvkm
 8763e000-8767e000 rw-s 0036e000 00:05 2228 /dev/pv...