Selection of a 'Key Object' for alignment is behaving differently in the latest update (v 21.4)

In previous versions of InDesign, I would select multiple objects and then set one as a “key object” by clicking it once more. All selected objects would remain part of the “selection”, and the “key object” would appear with a thicker blue outline to denote successful assignment. Once set, I would use various alignment tools based on the given need - i.e. ‘align horizontal centers’. 

In V 21.4, setting the “key object” is very buggy - it only registers when the cursor is just barely outside of the actual selected element whereas in previous versions a key object would register very reliably, so long as the cursor was near the edge of the given element.

If one can consider it as such, this ‘bug’ gets in the way of the workflow significantly, often resulting in a loss of the multiple selected elements. Getting something to register as the key object is very finicky.