Reset Layer Mask/Gradient Tool in Photoshop CC
The image shows a slight "fade out" on the bottom and only on the bottom.
The opacity of the entire picture is reduced.
Also, the gradient is now being added instead of removing the previous gradient.
How can I get back to the previous functionality of the layer mask/gradient tool?
Is there a way to reset the layer mask and gradient tools to default settings?
It sounds like you're using a White to Transparent Gradient. Going over it again and again on a raster layer will always Add to it. You need to either create a new layer each time, use a container Shape with a Gradient fill, or use a Gradient adjustment layer. As far as getting your original back, depending on what you've done since you can use the History or Step Back potentially to return to your previous gradient.
However to reset Gradients its real simple:
In Gradient Panel click the Settings cog on upper right and hit reset