The game crashes and resets the global recourse packs every time I quit with the game

Which almost makes the global recourse pack feature useless

 Steps of this bug:

1. I just used Classic Textures recourse pack as a global recourse pack for all worlds (I want nostalgia back)
2. Then everything is just working fine on gameplay or in the game
3. Then I quit the game (while the Classic Texture was still applied as a global recourse pack for all worlds)
4. I reopen it and it crashes
5. I reopen it again and the global recourse pack resets because it crashes (4 and 5 happens everytime I do 3 until 6)
6. I quit and reopen it again and it crashes everytime the loading screen was done, as a result... I CAN'T PLAY THE GAME ANYMORE (D-word, is minecraft hated it's classic look?)

EDIT:
GUYS! Just remove the "com.mojang" folder from the "games" folder in order to fix the crash from no. 6
But.... You can't use your old "com.mojang" folder anymore :'(

But why?