This is intended. It's to prevent players from casting spells while searching in the shop. We thought about disabling keyboard inputs only while the search bar was open, but we had some issues with players thinking the search box was open when it wasn't, and still accidentally casting things.
Overall we decided the best way to solve that was to disable inputs while the shop was open.
Open store LOCKS OUT any other ui option
Overall we decided the best way to solve that was to disable inputs while the shop was open.