Brush tool and eraser switching

https://drive.google.com/file/d/10UdRiCFLI6UgIw4YO1ZvfqlJrkxVqx6n/view?usp=drivesdk So, I got Adobe Animate just today and I'm having a very frustrating problem. Watch the full video I attached to see whatever is happening. No matter what I do, the brush tool will switch to an eraser (the colour isn't set at white, if anyone is wondering). When using the mouse, I can draw just fine, but as soon as I use my tablet there is an issue. (Not in video:) The program was working fine with my tablet, until i clicked on the screen with the mouse and then I would get this eraser issue with the tablet. All tablet setting hotkeys are disabled, and both are set to no action. I restarted the computer numerous times (Mac Catalina, latest version). The tablet I'm using is a UGEE 1910B, which I got the driver compatible with the new Catalina update. Photoshop works just fine. This is just an issue that makes it impossible to work with this program. Any thoughts?