strange keyboard setting

[TECNOMODEL]

I have a curious problem: from today the keyboard has a strange behavior. When I renounce a feature if I want to open a bracket, it inserts an asterisk, if I want to close the open one, if I put a question mark inserts an underscore and so on.

Does anyone have any idea what it depends on?

 

[Cast16]

proof burn.

 

[TECNOMODEL]

Thank you very much