After updating to OS Catalina the adjustments in Camara Raw filter are not working properly. I can make only one adjustment, but I am not able to use the eraser brush nor to create a new adjustment b rush/filters or others.
I have been able to reproduce the problem with the Erase radio button for the Adjustment Brush on my computer and have logged a bug for further investigation. I have not seen this problem happening when using the option key, however. I'm using the US keyboard layout--is it possible those having the problem with the option key are using a different layout?