Installed Chitubox 1.8.1 on Archlinux, I get this when I run it
chitubox-free: symbol lookup error: chitubox-free: undefined symbol: _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_createERmm, version Qt_5
When I go back to 1.8.0 beta, it works fine.