Area2D Collision layers improperly triggered by clicking area surrounding the collision layer boxes

[TheOrganicRobot]

Godot version: 3.2.3

OS/device including version: Windows 10 Home, Acer Nitro AN515-51 Laptop, Intel i5-7300HQ, Geforce GTX 1050

Issue description: Was going through the Heart Beast Action RPG tutorial and reached a certain point after adding many collision hurtboxes and hitboxes that caused multiple conflicting errors and collision layers improperly crossing that shouldn't be crossing and interacting.

Steps to reproduce:
After several hours of trying to solve the issue, I believe it came from the Collision section of an Area2D node. When opening the Collision section, there are there 20 boxes for the Layer and 20 for the Mask, and also the containing darker box containing all 20 of the layer boxes. The issue is that clicking anywhere within the darker container that is NOT on one of the 20 boxes still has some sort of effect regarding the decided collision layers without triggering one of the 20 boxes to be highlighted. This can be seen by the circular "revert" arrow that shows up, as well as in the Output that displays "Set collision_layer."

[madmiraal]

Sounds like a duplicate of #41281, but you've found the way to reproduce the problem. 👍