UE5.7 Middle-Click Issue

UE5.7 Middle-Click Issue

In the viewport, in previous UE5.6 versions, left-click is for selection, and middle-click does not select, so middle-click can be used to activate any view without accidentally selecting objects.

However, in UE5.7, middle-click behaves the same as left-click, which is very inconvenient because I can use left-click for selection, but now I cannot activate the window (left-click, middle-click, and right-click all select objects in the viewport). I hope to investigate the reason and revert to the UE5.6 behavior.

Thank you for reporting this issue! I was able to find and correct the regression. The final version of 5.7 should have this fix.