IntelliJ IDEA: Can't type { and [

Question

So I have a problem where in IntelliJ IDEA I can\'t type In

{ --(Alt Gr + B or Ctrl + Alt + B)  

and

Answer 1

In my case it was caused by LaTeX plugin for IntelliJ IDEA. After its installation the 'Toggle Star' option key was set 'alt+shift+8' which coincides with { of my keyboard. Hence the solution is analogous to your own answer:

1) Open Keymap (double-shift and type keymap)

2) Expand: Main menu > LaTex

3) Right-click 'Toggle Star' and remove the mapping.

4) Apply + Ok