Qml Profiler: Zoom slider on Timeline tab works incorrectly

When enabling zoom on the Timeline tab of the QML Profiler, the zoom slider behaves weirdly.
As soon as I click the mouse on the slider, the circle that indicates current position resets to the left side and does not change the position until the mouse button is released.

And even after it's released, the displayed position of the slider does not seem to match the actual zoom state.