Objects Drawn With Brush Tool Cannot Be Joined After Adding Outline to Them, Even if Removing the Outline Afterwards

[willywillycow]

Expected Behaviour

When you draw two separate objects with the same colour using the brush tool in vector mode, you can combine them by drawing another object with the same colour over them. This should work if you add outline to them, or at least removing the outline after you added it.

Actual Behaviour

When you draw two separate objects with the same colour using the brush tool in vector mode, you can combine them by drawing another object with the same colour over them. This doesn't work if you add outline to them, nor removing the outline after you added it.

Steps to Reproduce

Steps to reproduce the behaviour:

1. Open your Scratch editor, either downloaded from this "https://scratch.mit.edu/download”, or using this "https://scratch.mit.edu/projects/editor”
2. Delete cat sprite (yes do it just do it), add another empty costumed sprite and go into the costume editing page.
3. Make sure you are in vector mode, draw two different objects with the brush tool using the same colour. They can be anything, just make sure they are not joined.
4. Draw a stroke with the same colour as the two objects that overlaps the two objects, they should join into one object.
5. Undo.
6. Add outline to the two objects.
7. Draw a stroke with the same colour as the two objects that overlaps the two objects, normally if there wasn’t the outline the two objects should join, but with the outline they don’t.
8. Delete the stroke and remove the outline on the two objects, draw a stroke that crosses the two objects.
9. Normally the two objects would join, but now they don’t.

[willywillycow]

In addition, this effects me ALOT, like a real LOT, because I make alternate history as the main content. I discovered that it would look better to add outline to the borders, and now yeah turns out it doesn’t work, because then I would be unable to edit them.

[shibomb]

Is this the same problem?
With the default color there is no problem, after changing the color it seems to be treated as a separate object after Undo.
https://youtu.be/Ig64ePVkNas

Hope this helps to reproduce or solve the problem.
Thanks.