FOSS gamedev and creative worlds

When I start a game I cant open Inventory menu or press pause I cant do anything,and its hard to climb on blocks I cant walk and jump in same time!The game is working but there is some problems!I cant make anything in Inventory menu!This is just happening in new uptades.Like 0.4.1,0.4.2,0.4.3....... 0.3.1 working best for me!

Please describe more preciesly what bugs you are expirencing.

- What OS (operating system) do you use?
- How and which build did you install, for example:
- Compiled it yourself?
- A built from one of the the forum members?

P.s. :
- Did you unzip/extract minetest
- Did you move build, common, minetest_game and survival to the minetest/games directory/folder?