Hi there, there is a bug in the Call Method editor.
Short Description:
-When you try to write a string parameter (for example) it will lost the focus and will go invisible.
Steps to reproduce:
1- Apply the patch provided by Alex Chouls
2- Make an empty component(object) variable that have a method with one string as a parameter.
3- Try to write the string parameter.
4- Profit, it will lose the focus and won't allow you to set it.
Additional hints:
It seems that it's a problem related to the Cache method of this action, commenting
if(GUI.changed) {UpdateCache();}
seems to fix it, however it's not the real fix.
Cheers!