Commands/Game Mode Bug

The first bug i encountered was:

I wanted to test various commands to see the new items. 

None of them worked expect i put in a Delete under Mouse Command on a Tree or Anything else. Spiderden Delete under Mouse causes game to crash.

All other commands need to be spammed in hope they work. (Tested with Spawn, CreativeMode, God and Supergodmode)

Delete under Mouse Command works 9 times out of 10.

The second bug:

When creating a new World. For testing when you set the Game Mode to Endless after your first death world will be reset. Logging out resulting the Game Mode to be changed to Survival. 

Hope this helps.