> On windows, I type the name of an app, and right before I hit enter, the search changes and launches something else.

This shouldn't happen. If KeePass, for example, is the best guess for an app beginning with k, ke, or kee, it must also be for keep, keepa, etc. I've never experienced what you report. Except if I misspell the app name; then it's plausible that the reaction to my last (wrong) keypress happens while my hand is in flight towards the Enter key.