I have the floating panel set to dodge windows. When I approach the bottom of the screen with the pointer, just before the panel unhides itself a thin “glowy” bar about ~15-20px in height and the same length as the panel appears first, then the panel. The bar is the same color as the system highlight (in my case orange). It also shows up in full screen apps even though the panel does not. Sadly, this phenomenon does not show up on a screenshot.
Is this normal behavior? If so, can it be turned off? I do not know why it is there, and I find it distracting. It also seems to unnecessarily slow down the re-appearance of the panel, and it feels like a glitch. I checked the panel config and there is nothing relating to that bar, and all my screen edge effects are turned off in System Settings.
I am using X11 with Nvidia 550 with a fully updated Neon 6.1.4.