Thank you. I was able to see Unreal seems to load symbols for its own modules on RTLD_LOCAL anything else on RTLD_GLOBAL by debugging. So I can see VTK shared library is loading in RTLD_GLOBAL.
I’m understanding what you would like to say is that symbols in shared library should works if they is loaded in RTLD_GLOBAL.
I’ll try to use way by dlopen by changing call timing.