To reproduce:
1. Open project attached by QA
2. Make sure that "test_scene" is opened
3. Hit play and inspect profiler (focused on the memory)
4. Notice that mesh memory increases

Expected: After some time mesh memory should stabilise and remain still.
Actual: Mesh memory increases all the time till build/editor crashes.

Reproduced with: 2017.1.0a1, 2017.1.0f3, 2017.2.0b3
Not reproduced with: 5.6.2p3
Regression since 2017.1.0a1

Issue is cross platform, reproduced with: iPhone 7+ 10.3.2; Google Nexus 6*, OS:6.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 420.

To reproduce on builds enable development build and autoconnect profiler. After build starts in Unity select profiler window and click on connected player and select your device.

Note: If you disable development build and autoconnect profiler on builds memory leak disappears.