This should theoretically not be possible, but while we are sharing this
control's implementation between gameplay and non-gameplay usages, let's
ensure nothing weird can occur.
This was pointed out as an issue in the osu!taiko editor, but actually
affects all rulesets. Has now been fixed everywhere.
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Closes https://github.com/ppy/osu/issues/31548.
osu!mania could arguable be consdiered "more correct" with the old
display, but I don't think it's a huge deal either way (subjective at
best).