Bug#578389: Upgrading SDL breaks OpenTTD

[MP]

Package: libsdl1.2
Version: 1.2.14-5
Severity: critical

I found, that upgrading libsdl (libsdl1.2debian, libsdl1.2debian-alsa
and libsdl1.2debian-dev packages) from 1.2.14-4+b1 to 1.2.14-5 breaks
OpenTTD.

The problem is, that mouse cursor disappear when I click into OpenTTD
window (I can still click and cause actions, but I can't see the
pointer) and reappear if I move the mouse outside OpenTTD window and
then back inside.

I am using Debian sid (unstable), x86_64 architecture, fluxbox 1.1.1-7
window manager

The problem appears in both OpenTTD 1.0.0 and in svn builds, I dug out
even old OpenTTD 0.6.3 version suffering from the same issue after
upgrading libSDL.

I tried downgrading libsdl from 1.2.14-5 back to 1.2.14-4+b1 and it
fixed the issue with disappearing mouse pointer, so I think libSDL is
the root cause.