Disable all global libraries at once

I created a small set of my own libraries with the most common components. I want to make them available as global, hiding all the others.

From the “Manage Symbol Library” I can disable them of course, but one by one. I cannot find the check box at the top of the column to disable them all.
I can select all with ctrl+a, but still clicking on a checkbox will uncheck only one!

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