Origineel bericht door: Andrew Afonso ,
Have you checked your keyboard settings to see if there is a replacement set for those keys? It seems strange that both 5 and 6 will change to 56. Some people will add replacements like this as a prank, so check in the "Text" tab of the "Keyboard" section of system preferences. Also, have you tried the keyboard on another device, and if so, did the problem persist?