No longer able to click on right half of marker bar to make cursor jump directly

One feature I loved - and can no longer find how to enable/use since my last system reinstall - is the ability to click in the right half of the marker bar to make view and cursor jump directly to a specific location.  In other word, clicking in left half behaved classically, but clicking in right half was absolute, direct, and moved the cursor instantly to that point, which was great.  Has the feature just been removed altogether or am I missing something here?

Thanks for any help,

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