Memory leak in navigation mesh builder

[ericwj]

Release Type: Official Release

Version: 4.1.01734

Platform(s): Windows

Describe the bug Stride appears to use an unbounded amount of memory when generating navigation meshes from (a) heightmap(s).

To Reproduce Steps to reproduce the behavior:

1. Create e.g. a terrain in Gaea (any complex mesh) - a 512x512 heightmap exported from Gaea will do
2. Use the Stride editor to generate a navigation mesh from it
3. Observe the Stride editor using a lot of memory
4. Repeat step 2 and 3 and observe the memory usage increase - I have seen 40GB RAM usage

Expected behavior The memory usage may be large, but not that large and only temporarily.