Aptana problems - not show/read interrogation point "?" / encoding issues

I just downloaded Aptana 3 built 3.61.201410201044 and i'm experiencing an issue:

• Everytime i try to type the question mark "?" aptana enable/ disable "Show whitespace characters" option

I tried using both Shift+/ and AltGr+w and it didn't work Even if i copy/paste a text that use the character, it doesn't work on my method when running.

I'm on Windows 7; my keyboard is PT-Br and all the encodings (default and each file) are set to UTF-8

I don't know what to do, as i need this symbol to use many methods in Ruby...

I googled this issue for a long time before asking here, and just read about setting the encoding to utf-8 but i did it and didn't work.

Please help

Well, after many tries i found how to solve it. I'll post here just in case somebody else need:

Go to Preferences> General> Keys then search for "Show whitespace characters" and delet the binding (keys shortcut / hotkeys)