Partly revert 363d6f0de1a4724b6e2116ea4e887d9fbf010666 regarding SC_EFF_QUALITY_LCD_OPTIMIZED

Compare issue #1343.

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Fix filter icon not properly showing in Reference Browser

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>