This will be fixed in the next version. This is a problem with Windows Defender, unfortunately. When start menu is querying link files to get icon, defender re-scans the target of the shortcut which slows system down. It slows down whole i/o sybsystem to the crawl when a lot of shortcuts are displayed (and search displays lot of them). Icon extraction hits timeout that's why icons could be not displayed. I'll try to increase timeout or create a more viable workaround but to get rid of this behavior you should use some other AV.