1: in get_tech_sprite() [../../client/tilespec.c::6489]: assertion '0 <= tech && tech < advance_count()' failed.
Maybe another problem with Future Tech?
Given the idle timer on the backtrace, could also be inconsistent state with unfortunate timing.
Reply To cazfi
Maybe another problem with Future Tech?
progress_bar::set_pixmap() does not filter Future Techs out before trying to get the sprite, so looks like it's this.
3.1 , qt client configured with -qtver=qt5 ( --prefix=/Big/gcc11/FC31/ --program-transform-name=s:freeciv:FC31gcc11:g )