When taking a screenshot in the Roblox client on macOS using the Command Shift 3 shortcut, the system mouse cursor will appear on the screen as well as the Roblox moue cursor. I have marked up some of these screenshots showing where the system mouse pointer appeared in the screenshot. Sometimes the system cursor will appear right on top of the Roblox cursor and other times it will appear somewhere around the Roblox cursor.
To reproduce this problem, take a screenshot in the macOS Roblox client on macOS 10.15 or newer by pressing Shift Command 3.
It only does this on macOS Catalina, I tested this on my second computer with OS X 10.11.6 and it did not seem to have this strange behavior.
I do not have an exact date of when this started occurring but I know that was some time in early May.
Here are some screenshots taken with the Command Shift 3 shortcut:
The system mouse pointer is on top of my characters head while my Roblox mouse pointer is above the minimap (on the mobile garage button)
When the mouse is center locked like when you are holding a weapon in Jailbreak, the system mouse pointer will be positioned in a spot where it is overlapping the Roblox mouse pointer.
Here are 2 screenshots taken in an empty baseplate: The one on the top was taken with the Command Shift 3 shortcut and the bottom one was taken by opening the esc menu and clicking the take screenshot button
I also marked up this screenshot with a red circle around the system mouse cursor
Here are the specs of my computers:
Main Computer: MacBook Pro 13-inch Touch Bar mid-2018, Intel Core i5-8259U 2.3 GHz quad-core, Intel Iris Plus 655 IGPU 1536MB VRAM, 8GB RAM, 256GB SSD, macOS Catalina 10.15.5 (19F101)
Second Computer: MacBook Pro 13-inch Retina display late-2013, Intel Core i5-4258U 2.4GHz dual-core, Intel Iris IGPU 1536MB VRAM, 8GB RAM, 256GB SSD, OS X El Capitan 10.11.6 (15G22010)