Folder track collapsing/expanding mirrored in track/mixer view

Currently (unless I'm mistaken) you can collapse folder tracks in both the mixer view and track view... but they are not mirrored in both. So you must do it separately in both windows. To me, this seems like an easy and sensible opportunity for increased efficiency and clarity. I would expect people who are collapsing/expanding folder tracks to expect to see them in both windows. Apologies if this is some setting somewhere, but I can't find it and a search showed up other people finding this to be an issue. Thanks!

Hi, there' a custom action made by heda:

I'm not shure how it went, but in my case it collapses in sync. No extra click on a button needed. I someday activated it and since then it's there. But I will look how it was made, but at the moment it's not possible.

Sorry, I was totally wrong with the sync function on my system, but if you make a toolbar button with this action, you can hit that one instead of the one in the tcp. Maybe a good option to use both ways depending on your workflow.