That’s pretty much it. I created a new project - created a new terrain - attached the terrain toolkit - added a texture. Now when I try to zoom in on the terrain in the main window, it disappears, and no matter how close I get it will not reappear. However if I zoom back out, it will reappear. Any suggestions?
EDIT: I tested just creating a terrain, without attaching terrain toolkit or texture, and it still disappears as soon as I start to zoom in.
Try to change editor layout (window, layout) and then put back old one. This bug is quite annoying, it happens sometimes and this alaways helps, suprisingly restarting unity does not help (in my case).
Dude i am having the exact same problem right now and im getting really mad…
This does work. I change my layout to 2 by3 and it didn’t disappear anymore. Thanks now I can get my school work done hehe.
Anyway this is just workaround, because it is Unity bug.
This bug STILL exists.
With no confirmed solution.
What gives Unity team??? This isn’t a scene only bug, it is a project bug. Nothing can be done with this bug… None of the suggested “fixes” have helped me.
This has stopped me in my tracks for hours now and as if game design wasn’t frustrating enough…
Anyone know what to do??? Thank you
Not sure if this is the same issue you’re having, but sometimes when trying to zoom in on an object, it gets cut off by the clipping plane while still not that close. In this case, double clicking on the object in the hierarchy (thus focusing on it) seems to fix it.
I’m having the same problem, it ruined weeks of work for me since its a project bug =( I wish unity would speak up and at least acknowledge this breaking bug!!! Ugh!
Fix this issue unity!!!
Thanks dude, double clicking actually works 
I had the same problem: zooming in made the terrain disappear. Changing Base Map Dist. only temporarily/partially fixed. Turns out it was the error shown here on the terrain settings. After I changed that material, I can zoom in and out happily for hours at a time.
Suter
As somewhat pointed to above, sometimes this is simply caused by your camera’s clipping plane when you try to zoom in on an object.
If you focus on a gameobject (I do it by selecting a gameobject near where I want to zoom in and hitting the “F” key in the scene view), then I can zoom in on that location in my gameworld without it disappearing on me.
It may simply be you need to focus (“F” key in the scene view) on an object where you want to zoom in on. If worse comes to worse, make an empty gameobject, drag it to where you want to look around in your game-view, and then focus on that empty gameobject. Then you should be able to zoom in on it without stuff disappearing. I admit, it is pretty annoying sometimes.
thankyou so much, Window—>Layout–>Revert to factory settings worked like a charm. I’ve been struggling with this bug for awhile off and on since Unity 4.3 when I started using Unity, usually when I change terrain height map data it seems. I’ve thought my project was corrupt and rebuilt even or I just couldn’t put my finger on it I would have so many different systems integrated. Going forward from here I feel a lot better. Thankyou. Currently using Unity 5.1.1
I ran into this problem for the first time today with Unity 5.2.2f1 on a new MacBookPro. It had absolutely nothing to do with the suggested “looking too close- clipping” suggested here. The whole terrain was missing in game… just plants( trees and grass) remained. Also the window-layout-trickery did nothing. Also on Windows PC, the same terrain shows no problem, so I put it into a prefab-container on PC that I then opened on MacBook Pro in a new scene. The same issue again. So it was not the terrain itself. Next I tried the suggested material bug-message, it was set to the default so there was no material slot. How ever when I set it to custom material but put no material in the issue was “solved”. Also curiously (I guess it is now actually using some less computationally heavy shader) FPS-rates got higher than previously with no significant visible degradation in small scene window.
Hey, did you check the ‘Base Map Dist.’ property in the terrain inspector? If you move that value to zero the terrain might show up.
And funny thing is, it happens to me also. This issue occurs when I set the build target as mobile devices. Everything seems nice, works nice, even on the mobile device. But when I restart the Unity it just vanishes. So I’m forced to minimize the Base Map Dist. to run the game. The terrain quality isn’t nice anymore. I think there is some bug to be fixed.
I found the way to fix this has to do with scrolling the MMB. This seems to be controlling the clipping distance.
What I found is that if you move forward in the scene view by holding W, and scroll the MMB up or down (not sure which direction does what), this will then make the view jump from the movement being multiplied from the MMB scrolling.
But when I move back to the area where I noticed the clipping, the clipping is gone.
I’ve seen this method fix both close and near clipping.
Sorry that I can’t give a better more concise solution, but the key has to do with the MMB for sure.
I got it to work with the method I described earlier. No reduction in quality. No need to tinker with enabling the lower quality render on shorter distances.
It’s either an editor bug or there’s something wrong with the “Standard” material.
Changing to custom and setting “No material” is a workaround for now, thanks all.
Plzzz eneone one tell me the solution of my problem …my terrain texture dispeare in game view when i make some panel and gameplay GUI but the terrain texture show in scene view butt not in mobile and game view
I am using NGUI in current project…
I’m getting this too on OSX.
I found that changing to a custom material doesn’t work either. My terrain is still completely invisible.
It’s like something corrupts the project, even creating a new scene doesn’t bring it back.
All terrains created after the issue manifests itself become invisible.
The only fix is to start a completely fresh project.