An illustration attached tries to explain a phenomenon with double 
quotation marks automatically substituted with AutoCollect.

 1. Type a double quotation mark at the beginning line.
 2. Type an English text.
 3. Activate Input Method to enter Asian scripts.
 4. Type a Japanese text.
 5. Inactivate Input Method or change its mode to direct input.
 6. Type a double quotation mark following the Japanese text.

 The first double quotation mark turns to be a Western one.
 The second one turns to be a Japanese one.

I have not a good solution for this undesirable behavior at this moment.
But something could be considered.