Inconsistent Selection Behavior

I'm getting inconsistent behavior when making selections of edits to perform operations on.

video to demonstrate--

https://vimeo.com/287321829/a25dec19cd

Having some kind of a GPU issue with my screen recording software. Apologize about the glitchy text.

This is still driving me insane as I work.

Is anyone else experiencing this?

It seems about 50% of the time, regardless of what is selected it will select every edit of a linked clip while trimming, and then the other 50% of the time it will respect the selection which is what I want.

There doesn't seem to be any rhyme or reason to it.

Still seeing this inconsistent selection behavior in 15.1