General instability in v0.88

[pre]

I like the app in general. But there's some consistent instability.

The symptom is that AltAppSwitcher no longer works - it does not react to my WIN-TAB binding until I restart it.

The logs have lots of these kind of rows:

Wed Apr 15 11:23:57 2026:
File: Sources/AltAppSwitcher/AppMode.c, line: 1496:
Error: dwp != 0
Last winapi error: Access is denied.


Wed Apr 15 11:23:57 2026:
File: Sources/AltAppSwitcher/AppMode.c, line: 1496:
Error: dwp != 0
Last winapi error: Invalid handle to a multiple-window position structure.

Ideas how to provide further debug are welcome.

Config

app hold key: left windows
next app key: tab
window hold key: right windows
next window key: tab
invert order key: left shift
previous app key: none
close app key: q
theme: auto
app switcher mode: app
display name: selected
multiple monitor mode: mouse
app filter mode: all
desktop filter: current
restore minimized windows: true
allow mouse: true
mouse keyboard common selection: false
check for updates: true
scale: 1.750000

```

[pre]

The AltAppSwithcer does not always crash. Sometimes WIN-TAB revert to the default Windows behavior, but then on the next WIN-TAB AltAppSwitcher shows again.

I have multiple monitors, it may have something to do with that. Or maybe not - moving windows between monitors sometimes triggers it but often the problem happens even though no windows mere moved.

[hdlx]

Thanks for the feedback 🙂 No issue in 0.84? If so I might have have an idea.

[pre]

The issue reproduces also by keeping the AltAppSwitcher selection window open (holding down F3 which also activates it for me in Apple Magic Keyboard), and just moving the mouse hover over different icons left&right. After couple of seconds AltAppSwitcher goes crazy.

That said, the application does not immediately go crazy if I WIN TAB and hold WIN key, and then hover with mouse. Only holding F3 while moving mouse makes it crazy. But WIN+TAB activation also makes it crazy but more occasionally.

I have enabled the feature which activates the application which is under mouse hover (single selection or whatever it was called in the settings).