Debian Sid, legacy nvidia 340.108 driver ruins running Qt software

Debian Sid. With nouveau all working good. But after installing legacy 340.108 nvidia driver for my gf9800 i have Segmentation Fault at launching all Qt GUI software. And opposite, Qt works again after uninstalling nvidia driver. But very strange that if i run Qt soft via debugging tools such gdb or strace i have no errors.

gdb ./doomseeker
strace ./doomseeker

Same is with Qbittorrent and 2048-Qt Only one Qt application starting normally - CMake GUI and Audacious Qt theme Segmentation fault

#include 
int main(int argc, char **argv)
{
  QApplication app(argc, argv);
  return 0;
}

Is where any solution to fix this?