Issue: The sample program crashes (segfault) when I click on the ImagePanel section. - Operating System (name & version): Ubuntu 18 - Compiler (name & version): not sure if it used gcc or clang, here are both: gcc 7.4.0; clang 6.0.0 - Target renderer: ALLEGRO5 - cmake command-line used: cmake -DRENDER_ALLEGRO5=ON