Hmm, things are getting weird with this, I can press 7 letter keys and they all show up, also not including ctrl/shift/alt and cursor keys(as you mentioned)
Though its only certain keys: for example, I can press W+A+S+D and only 3 will come up, however if I press A+S+D+K+M+N they all show up.
Though its only certain keys: for example, I can press W+A+S+D and only 3 will come up, however if I press A+S+D+K+M+N they all show up.