Keyboard focus navigation with 4 windows not fully working as expected

[Thulium-Drake]

• Sway Version:
  sway version 1.10.1 (on Fedora 41)

• Configuration File:

# Alt key
set $mod Mod1

# Home row direction keys, like vim
set $left h
set $down j
set $up k
set $right l

# move focus
$mod+$left  focus left
$mod+$down  focus down
$mod+$up    focus up
$mod+$right focus right

• Description:
  Navigating around different panes with the keyboard in the same workspace doesn't always lead to logical results.

Consider this layout:

| 1 | 2 |
|---|---|
| 3 | 4 |

When using the hotkeys mentioned in the config example above, I would expect to be able to navigate focus with the following moves:

1. 1-2
2. 1-3
3. 2-4
4. 3-4
   And their opposites.

But if the layout was made as follows:

|   1   |
|       |

1. Split vertical

| 1 | 2 |
|   |   |

2. Split 1 horizontal

| 1 | 2 |
|---|   |
| 3 |   |

3. Split 2 horizontal, and the focused windows are 2 and 4 (the, in my case, blue and grey borders)

| 1 | [2] |
|---|-----|
| 3 | [4] |

The possible moves are:

1. 2-1 and back
2. 2-4 and back

After moving focus from 2 to 1 for example, the layout now looks like this:

| [1] |  2  |
|-----|-----|
| 3   | [4] |

Now, when moving 'down', I expect the focus to go from 1 to 3, instead it goes to 4.

I hope this explanation makes sense and makes the problem clear! :-)

If you need any additional information, please let me know!