Hello! I'm glad it has been helpful to you. It's very important to me to listen and build trust with our users. I have already updated the plugin version to see if we can resolve the issues you mentioned.
The only thing that catches my attention is the "W" key issue you mentioned, as it hasn't happened to me. What I have done is implement a system that prevents the window from closing if the up arrow is pressed, as some plugins sometimes remap the "W" key to the up arrow, and that might be the problem. You should activate it in the plugin settings.
Remember to update the plugin by right-clicking on the plugin list, selecting ItemFiltering, and Right clicking on "Refresh" to refresh the update and view the new parameters.
I hope you manage to resolve those inconveniences, and I am at your disposal.
Sending you a big hug!