Navmesh generation is broken in Reforger Workbench world editor 1.3 (production)

The option to regenerate changed tiles always regesters a zero count.

Generating an entire navmesh seems to run normally, but once the timer is hit the process continues infinitely with a steady ram usage increase of 100mb per min.

Option to autosave when done is unavailable entirely.

I haven't previously encountered this bug, and I have been generating navmeshes on the same terrain for the last year without issues.