I'm trying to replicate the problem in fresh install of power store, but cannot see the issue. I have added an item to the catalog using french accented characters in the name, and description fields and added different options for that item. Some options are set with 0 inventory, some are not available on line. All of the options correctly show the name. It would seam there is a modification that you have made to the power store files that is causing the problem to occur.