Gradient Tool acting weird after quick selection wand across different layers

Bug Reports
1

I can’t even start to explain the weirdness of this bug, so I’ll just describe how to reproduce it:

In a new file (with a large resolution, so the bug is more visible), create 2 layers, place a large object on the bottom one and a smaller one on the top layer with solid, but different colors. Now select the bottom object with the selection wand, go to the top layer, switch the wand mode to “intersect selection”, and click outside the small object. You should end up with a selection of only the visible part of the large object. Now go to gradient tool, select a dithering matrix (I used bayer 4x4) and try making a gradient. It will be distorted in a weird and different way, depending on which layer you are (even on layers other than the 2 objects).
Example
I don’t know if all the steps above are required to reproduce the problem.
I use Aseprite 1.2.25 on Windows 10 Pro x64, the prebuilt binary.

2

With me I don’t need all those steps to reproduce the issue. Just lasso and gradient, and there it is. I’m working with Aseprite v1.3.6.

The crazy thing is that it didn’t use to happen. I got it sometimes in the past and restarting the app solved it. But for whatever reason it isn’t the case anymore for a while and I’m having the bug all the time.

Here is an example:

Sprite-0001-export
Sprite-0001-export1234×2100 25 KB

1st: As you can see I already did a lot of the work using the exact same method I’m describing (Lasso+Gradient). The bug did occur many times, but mostly I had the expected results.

2nd: Just to show the app is working properly otherwise. If I don’t do any selection at all, the Gradient Tool works perfectly as intended.

3rd: If I do a Lasso selection, no matter the shape, the bug appears. It also happens with all the other dithering algorithm options.