I don’t know if a fix is planned (I have no connection to L&L), but the problem is caused by the fact that the apostrophe may be a straight “typewriter” quote or a smart (curly) one; typically, if you type into a dialogue box you will type a straight quote (the plain keyboard character), but when you type into Scrivener, it will be converted into a curly (typographer’s) quote. That’s why the search fails.
However, if they’re all curly, you can use Windows Character Map to just insert the correct character (U+02BC Modifier Letter Apostrophe) in the search box.