Switches in "Session Player" do not work

For several days the “Zoom mode” switch and the “MPA”, “HeartRate”, “Power”, “Cadence”, “Target Power” markers in “Session Player” do not work - but in a new window.
If “Session Player” is only displayed in a tab in the browser, these switches are working properly.
The problem occurs on different browsers (FireFox, Edge, EdgeBeta).

Such blocking is a deliberate action of programmers or just an “accident at work”?