QT for some reason messes with XCompose causing broken input (Qt 5 only - Qt 4 did not break anything). In Qt 5.2 and 5.3 this was causing an invalid conversion in chat messages containing these resulting in the bad bytes being stripped. In Qt 5.9 it is still broken, but you at least get a string with something in it. This checks for non-zero converted strings for room creation and chat lines.
# Find GLEW
#
# Once done this will define
# GLEW_FOUND - system has GLEW
# GLEW_INCLUDE_DIR - the GLEW include directory
# GLEW_LIBRARY - The library needed to use GLEW
# Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
include(FindPackageHandleStandardArgs)
find_path( GLEW_INCLUDE_DIR GL/glew.h
/usr/include
/usr/local/include
/sw/include
/opt/local/include
$ENV{PROGRAMFILES}/GLEW/include
DOC "The directory where GL/glew.h resides")
find_library( GLEW_LIBRARY
NAMES GLEW glew glew32 glew32s
PATHS
/usr/lib64
/usr/lib
/usr/local/lib64
/usr/local/lib
/sw/lib
/opt/local/lib
$ENV{PROGRAMFILES}/GLEW/lib
DOC "The GLEW library")
if(BUILD_ENGINE_JS)
set(GLEW_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include")
SET(GLEW_LIBRARY "glew_emscripten_internal")
endif()
find_package_handle_standard_args(GLEW DEFAULT_MSG GLEW_LIBRARY GLEW_INCLUDE_DIR)
mark_as_advanced(GLEW_LIBRARY GLEW_INCLUDE_DIR)