Gazebo 9.5 does not create a cache file when loading heightmaps in Ubuntu Bionic.
To reproduce, run
In this example, a directory
~/.gazebo/paging/heightmap_bowl and a file
gzterrain.SHA1 are created, but the cache file is missing.
However, if I add the following material tag in the
<material> <script> <uri>file://media/materials/scripts/gazebo.material</uri> <name>Gazebo/White</name> </script> </material>
The cache file is created, but then the heightmap won't have the right texture.