Null pointer access happening in heightfield testbed demo when compiled with profiling enabled

[mickeyordog]

Here's a screenshot where you can see the stack trace where the bug is happening on latest master. It only happened on the heightmap demo. If you compile with profiling + testbed then you should see it pretty quickly. On Windows 11

[DanielChappuis]

Thanks a lot for reporting this. I will try to reproduce it on my side.