[Pkg-chromium-maint] Bug#864885: chromium: css dropdown menus not working - workaround

[Roland Koebler]

Package: chromium
Version: 57.0.2987.98-1~deb8u1
Severity: important
Tags: upstream patch

Dear Maintainer,

in Chromium, CSS dropdown menus do not work: They drop down/open correctly;
but clicking on a menu-item only closes the menu but does not start the
click-action (e.g. activate the link, open the linked page).

There is already a bugreport on the Chromium-bugtracker, but since this
bug now exists for several versions without any fix, I recommend to add
a workaround to the Debian-package.

Chromium versions: 57 and several previous versions (maybe since 43);
                   probably also newer versions, but I did not test these.

Related Chromium-bugs:
- https://bugs.chromium.org/p/chromium/issues/detail?id=713746
- https://bugs.chromium.org/p/chromium/issues/detail?id=701637

Workaround:

- Start Chromium with: chromium --disable-features=SendMouseLeaveEvents

Solution:

- add a file to /etc/chromium.d/, e.g.:
  /etc/chromium.d/workaround_dropdownmenus.conf

  with the contens:

  # workaround for Chromium bugs #701637 and #713746
  export CHROMIUM_FLAGS="$CHROMIUM_FLAGS --disable-features=SendMouseLeaveEvents"


-- System Information:
Debian Release: 8.8
Architecture: amd64 (x86_64)
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# workaround for Chromium bugs #701637 and #713746
export CHROMIUM_FLAGS="$CHROMIUM_FLAGS --disable-features=SendMouseLeaveEvents"