Navigating interface jump count equal to number of canvases issue

[mtszkarbowiak]

Issue description:

Navigating through focusable UI controls makes two changes instead of one.

Steps to reproduce:

1. Create canvas.
2. Add 3 buttons (for example vertically).
3. Just navigate (I mean... try) through them.

The bug is triggered whenever nav-target is manually set or not and auto-focus is used.

Flax version:

1.7.2, 1.8.1, master

Note: For some reason Flax 1.7.2 expected navigation events to be in 'Pressing' mode. During migration to 1.8.1 I needed to switch to 'Press' mode.

This issue impact my project very much. It is problematic.

Suggestion: Add something to debug navigation. Just arrows (like Unity) would be enough.

[mtszkarbowiak]

Small update

It turns out that number of jumps is directly correlated to number of active canvases. (No matter what is their configuration.)

[mafiesto4]

Fixed in 0a4e89e (tested both in Editor and cooked Game).