Graphics flickers rapidly on mouse hover with certain skills on left mouse button.

Graphics relating to mouse hovering over some object will flicker on and off if certain skills on bound to the left mouse button (lmb), and the button is held down. I encountered this when I wanted to assign War Banner on lmb and noticed things flickering.

To reproduce:
1. Assign problem skill to lmb (usually most people assign move-only there)
2. Click and hold on empty space. Anywhere, town or map.
3. While mouse held down, move cursor over any object that can be highlighted, problem presents. Might be a little annoying since your character/camera moves also.

Skills include Banners, most reservation, Heralds. This is highly inconclusive, I have not been able to pinpoint general theme of the problem. It's not instant skills, as Phase Run/Convocation is no problem. Temporal Rift cause no problem, so it's not reservation. Idk.

Graphics include white highlighting around NPCs, other Players, Enemies, Stash, Areas in a town. It also includes the health hud thing on the top for enemies/players on mouse hover. Areas in a town in particular is egregious, since the highlighting for them is an entire white shape drawn on the screen... flickering rapidly.

This is tested on both Vulkan and DX11, I guess not rendering problem.

Edit: forgot to put in that I play on linux, though I don't remember any problems like this.

Edit 08/23 oh wow, this problem prevents any action on stash, crafting bench, npcs. Like my stash would open and close in a split second, like I have an auto clicker on.