How to solve a problem with UI anchors in Unity 5.2

Hello guys, I've got an issue with the UI anchors after upgrading from Unity 5.1 to 5.2. I open my project which was created with the previous version of the game engine and here's the problem: when I change the anchors' positions of a panel and then run the game the anchors restore to their previous position after the game stops and that's the root canvas' left down corner. How can I temporarily change these anchors and they stay there forever. I didn't have this issue with Unity 5.1. Thank you in advance. :)