Bug#871947: [firefox] Firefox 55 regression for vCenter WebClient 6.0

[Adrian Ban]

Package: firefox
Version: 55.0-2
Severity: serious

--- Please enter the report below this line. ---

Hi,

After upgrading from Firefox 54 to Firefox 55 I've notice that the
vCenter Web Client 6.0 is not working anymore. After login I'm receiving
a message with Could not connect to vSphere Web Client. Contact your
administrator to fix this issue.

Trying to restart vCenter Web Client, whole server and other tricks I've
tried to connect from Chrome. Result success.
After the Thunderbird issues with the widgets drawing regression I've
tried to downgrade FireFox to 54. Result success, no issues.
Upgrading to FF 55 (latest) the issue is back.
vCenter WebClient 6.0 is using a Flash interface and I'm using
pepperflashplugin-nonfree/unstable,now 1.8.3+nmu1 amd64
[installed,automatic] as a flash plugin for both Chrome and Firefox.

Kind regards,
Adrian


--- System information. ---
Architecture:
Kernel: Linux 4.11.0-2-amd64

Debian Release: buster/sid
500 unstable snapshot.debian.org
500 unstable ftp.ro.debian.org
500 stable files2.eid.belgium.be
500 stable files.eid.belgium.be

--- Package information. ---
Depends (Version) | Installed
==============================================-+-==================
libatk1.0-0 (>= 1.12.4) | 2.24.0-1
libc6 (>= 2.18) |
libcairo-gobject2 (>= 1.10.0) |
libcairo2 (>= 1.10.0) |
libdbus-1-3 (>= 1.9.14) |
libdbus-glib-1-2 (>= 0.78) |
libevent-2.1-6 (>= 2.1.8-stable) |
libffi6 (>= 3.0.4) |
libfontconfig1 (>= 2.12) |
libfreetype6 (>= 2.2.1) |
libgcc1 (>= 1:4.2) |
libgdk-pixbuf2.0-0 (>= 2.22.0) |
libglib2.0-0 (>= 2.31.8) |
libgtk-3-0 (>= 3.0.0) |
libgtk2.0-0 (>= 2.10) |
libhunspell-1.6-0 |
libjsoncpp1 (>= 1.7.4) |
libnspr4 (>= 2:4.10.9) |
libnss3 (>= 2:3.30) |
libpango-1.0-0 (>= 1.14.0) |
libsqlite3-0 (>= 3.14.0) |
libstartup-notification0 (>= 0.8) |
libstdc++6 (>= 6) |
libvpx4 (>= 1.6.0) |
libx11-6 |
libx11-xcb1 |
libxcb-shm0 |
libxcb1 |
libxcomposite1 (>= 1:0.3-1) |
libxdamage1 (>= 1:1.1) |
libxext6 |
libxfixes3 |
libxrender1 |
libxt6 |
zlib1g (>= 1:1.2.3.4) |
fontconfig |
procps |
debianutils (>= 1.16) |


Package's Recommends field is empty.

Suggests (Version) | Installed
===============================-+-===========
fonts-stix |
OR otf-stix |
fonts-lmodern | 2.004.5-3
mozplugger |
libgssapi-krb5-2 |
OR libkrb53 |
libcanberra0 |



--- Output from package bug script ---

-- Extensions information
Name: Adblock Plus
Location: /{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}.xpi
Status: enabled

Name: Application Update Service Helper
Location: /aushelper at mozilla.org.xpi
Status: enabled

Name: Awesome Screenshot - Capture, Annotate & More
Location: /jid0-GXjLLfbCoAx0LcltEdFrEkQdQPI at jetpack.xpi
Status: enabled

Name: Belgium eID
Location:
/usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/belgiumeid at eid.belgium.be.xpi
Package: beid-mozilla-extension
Status: enabled

Name: Best Proxy Switcher
Location: /bestproxyswitcher at bestproxyswitcher.com.xpi
Status: enabled

Name: Click-to-Play staged rollout
Location: /clicktoplay-rollout at mozilla.org.xpi
Status: enabled

Name: Compact Dark theme
Status: user-disabled

Name: Compact Light theme
Status: user-disabled

Name: Default theme
Location:
/usr/lib/firefox/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi
Package: firefox
Status: user-disabled

Name: Emuflex
Location: /hyklee at connect.ust.hk.xpi
Status: enabled

Name: Firefox OS Simulator
Location: /r2d2b2g at mozilla.org
Status: user-disabled

Name: Firefox Screenshots
Location: /screenshots at mozilla.org.xpi
Status: enabled

Name: FireShot
Location: /{0b457cAA-602d-484a-8fe7-c1d894a011ba}
Status: enabled

Name: Follow-on Search Telemetry
Location: /followonsearch at mozilla.com.xpi
Status: enabled

Name: Go-Mobile
Location: /jid0-W5zY771zDsu5o7dTJ8KHm38w1xs at jetpack.xpi
Status: enabled

Name: Google Selection Translate - For AltKey
Location: /jid1-f7dnBeTj8ElpOQ at jetpack.xpi
Status: enabled

Name: Google translate https
Location: /jid1-vhLR6vkMUx9csw at jetpack.xpi
Status: enabled

Name: Google Translator for Firefox
Location: /translator at zoli.bod.xpi
Status: enabled

Name: Groovy Blue theme
Status: enabled

Name: metal flowers - animated theme
Status: user-disabled

Name: Multi-process staged rollout
Location: /e10srollout at mozilla.org.xpi
Status: enabled

Name: Personas Plus
Location: /usr/share/xul-ext/personasplus
Package: xul-ext-personasplus
Status: enabled

Name: Pocket
Location: /firefox at getpocket.com.xpi
Status: enabled

Name: Proxy Tool
Location: /proxytool at proxylist.co.xpi
Status: enabled

Name: ReloadEvery
Location: /{888d99e7-e8b5-46a3-851e-1ec45da1e644}.xpi
Status: enabled

Name: S3.Google Translator
Location: /s3google at translator.xpi
Status: user-disabled

Name: Shield Recipe Client
Location: /shield-recipe-client at mozilla.org.xpi
Status: enabled

Name: uBlock Origin
Location: /uBlock0 at raymondhill.net.xpi
Status: user-disabled

Name: Video DownloadHelper
Location: /{b9db16a4-6edc-47ec-a1f4-b86292ed211d}.xpi
Status: enabled

Name: Web Compat
Location: /webcompat at mozilla.org.xpi
Status: enabled

Name: www.Tran
Location: /trident at trident.com.ua.xpi
Status: user-disabled

Name: Youtube Downloader - 4K Download
Location: /paulsaintuzb at gmail.com
Status: enabled

-- Plugins information
Name: Shockwave Flash (25.0.0.171)
Location:
/usr/lib/browser-plugin-freshplayer-pepperflash/libfreshwrapper-flashplayer.so
Package: browser-plugin-freshplayer-pepperflash
Status: enabled


-- Addons package information
ii beid-mozilla-e 4.2.5v4.2.5- all Belgian Electronic Identity Card
ii browser-plugin 0.3.5-1+b2 amd64 PPAPI-host NPAPI-plugin adapter f
ii firefox 55.0-2 amd64 Mozilla Firefox web browser
ii xul-ext-person 1.8.3-1 all easy-to-install skins for Firefox

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