Adding/Removing collision doesn't affect Navmesh

Hi, Epic Games
In 4.14 Adding/Removing collision doesn’t affect Navmesh

In first image I have collision on static mesh and it affects navigation

On second image I use Collision > Remove Collision. But when I move rock or nav mesh it still thinks that collision exists.

Until you uncheck HasNavigationData then check again AND move ALL objects in scene that has that static mesh to Update NavMesh.

I read changelog but couldnt find anything about it. Please help!

P.S. Also it doesnt work if you want to add collision. It doesnt work till you you uncheck/check HasNavData and move object in scene.

Hey Xukapy,

Thanks for your report. It looks like this issue has already been logged in our system: Unreal Engine Issues and Bug Tracker (UE-29415)

I’ve added additional information to the ticket regarding specific repro steps.

Have a great day!

Wait, what? In 4.13 everything was ok.

Interesting, I’ve seen the same issue occurring in 4.13. However, the bug has been entered, and please feel free to vote for it in order to keep track of it as well as show you interest in getting a fix. Keep in mind that a high number of votes does not necessarily guarantee a quick fix; however.

This is still a bug in 4.17.1!

Just an update, this is being tracked in a separate ticket now: Unreal Engine Issues and Bug Tracker (UE-23125)