Good day Tim Rogers!
Thank you for posting your question to the Q&A forum.
From what you described, you noticed a change in desktop behavior where moving the mouse to the top of the screen previously triggered a box with additional options, but this behavior is no longer present after a recent update.
As you observed, one possible explanation is that the box appearing when the mouse reached the top of the screen was related to experimental or transitional handling of taskbar or desktop interactions. In some builds, especially Insider builds, features like this may be temporarily enabled and later adjusted, hidden, or removed as part of ongoing UI changes.
Just a few days ago, Microsoft publicly shared that additional taskbar customization is coming, including support for moving the taskbar to the top or sides of the screen, as shown below:
Reference: Our commitment to Windows quality
This confirms the direction Microsoft is heading, but it has not explicitly stated that the behavior you observed was an early phase of that rollout. As such, any connection between the two remains speculative at this point.
As for timing, there has been no official announcement indicating when these taskbar positioning options will be made available to Insiders or to the general public. Since this is a user‑to‑user community forum, we can only share observations and personal experiences, while these changes appear to be handled in the backend. For now, the best approach is to remain patient and keep an eye on official announcements or upcoming Insider build notes.
If Microsoft shares more concrete details or if the feature becomes available, I’ll be happy to update the thread.
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