Searching with "\" might crash the Store. I'm already updated to the latest version of Microsoft Store.
I'm not sure why this happen. Seems it's trying to access it as a file path. Sometimes a standalone backslash can crash the Store while sometimes can't. Adding some words before the backslash can certainly crash the Store such as "edge\".
The bug can be reproduced and is shown in the screen record attached. I found it when searching for Edge and unintentionally typed a "\".