I've got some files that start with the text [A-A]
The algorithm can't match the right movie if the title starts with [A-A].
the scanner has real trouble with them - it runs very slowly, several seconds or more per file, sometimes the scanning window dissapears for a time then reappears, 'abort' button responds very slowly, etc.
I'm not surprised, "A" is a very common article that can be found in many titles.
Let me know if you need any more info/tests, if you can't replicate it...
I'm sorry, I can't consider it as a bug.
in the meantime it's easy to work around just by renaming the files
That's definitively what you need to do!