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