Drawer Panels - How To Remove Arrows?

Is there a way to remove the drawer arrows, as circled in the screenshot?

drawerArrow

Things I have tried so far:

  • profuse and excessive googling
  • dconf-editor - this appeared to be promising, as there exists the "has arrow" option in the menu for each panel component, but it does not appear to do anything, or I'm misunderstanding its intent, or yet another possibility, there's a way to "refresh" the panel item after I set this option so it reloads somehow?
  • mate-tweak
  • Searching for the arrow graphic in my theme so I can replace it with a blank transparent png/svg. I don't think it's in there, but if anyone knows where it is please tell me!

Thank you very much for your time and assistance!

Here is the dconf menu option I mentioned that doesn't seem to do anything, at least for drawer panels: