So, I tested on this patch and I found it's working fine for me as long as I'm setting the filter to Titanium Ore. This patch seems to be difficult in the sense that it's shallow, poor, and mixed in with sand and quartz. So, leaving it on Auto, it will pick up the sand and the quartz, which messes up the designation. Let me know if this helps.
 just targets everything except rock and dirt.
Those bumps are probably debris, which it has designated for removal.
Considering adding a saddle type slope with one corner up and one corner down. This would allow ramps to make prettier 90 degree turns, but not sure if it excavates/dumps properly.
There will be an option for flatter bottoms in the next release.
There will be a warning message in the next release if the ramp could not be fully created.
It sounds like you’re talking about an ”exclusion filter”, being able to set one or two materials that should be avoided in the designation?
The ramp is created after the ore designation and only if there is room in the area for a ramp. Increase the area or create a manual ramp.