Snapping does not work reliably for multiple instances of the same program

[johenning]

Describe the bug
Quick Snapper as well as Snap with right click do not work reliably for multiple windows of the same program (especially newly opened windows).

I can't reproduce it 100% of the time, but I can reproduce it pretty consistently.

How could us reproduce this issue? (If you remember)

Steps to reproduce the behavior:

1. Open Terminal or Firefox (both of which I can reproduce it with)
2. Snapping on the single instance works as expected (both right click and quick snapper)
3. Open a new instance with ⌘+N
   3.1 Grab the new instance and try to activate snapping via right click -> does not work for me
   3.2 Double click the windows to maximize and grab it again -> now right click activates snapping
4. Open another instance with ⌘+N
   4.1 Activate Quick Snapper and press a number to move window to a zone -> The newly opened window is not moved, instead one of the existing ones is

Expected behavior
Snapping works for the active window, regardless of how many windows there are.

Videos / Screenshots
Right click to snap: https://youtu.be/TvfHeHJ9m_A
Quick Snapper: https://youtu.be/M-CAsDctuNc

Tell us about your macOS and MacsyZones versions?

• macOS Version: macOS Tahoe 26.3
• MacsyZones Version: 2.1

[rohanrhu]

Hello, I tried multiple times to reproduce the problem, but I couldn't reproduce it.

I'll try again later.

[johenning]

Hello, I tried multiple times to reproduce the problem, but I couldn't reproduce it.

I'll try again later.

Hm, strange. I have a few more utility applications running (Tiles, AltTab, BetterDisplay, ...) but terminating them does not make any difference.
At the moment I can't think of anything else that might be interfering with MacsyZones.

These are my desktop & dock settings:

[rohanrhu]

I'm still on macOS 26.2. Apple might have changed something in macOS 26.3 about WM or AX APIs. I'll check. Thank you.