To show it's affecting oS components too, here's a konqueror crash. Thread 1 (Thread 0x7f8b6fbf7740 (LWP 8491)): [KCrash Handler] #6 0x00007f8b6dd0f376 in __strcmp_ssse3 () at /lib64/libc.so.6 #7 0x00007f8b39b38098 in () at /usr/lib64/libQt5WebKit.so.5 #8 0x00007f8b39b381fb in WTF::Collator::collate(char16_t const*, unsigned long, char16_t const*, unsigned long) const () at /usr/lib64/libQt5WebKit.so.5 #9 0x00007f8b38a0f325 in () at /usr/lib64/libQt5WebKit.so.5 #10 0x00007f8b3744e072 in xsltForEach () at /usr/lib64/libxslt.so.1