Alt-tab-macos: App quits as soon as I press `cmd`

[alt-tab-macos-bot]

_This issue was opened by a bot after a user submitted feedback through the in-app form._

__From:__ [email protected]

__Message:__

The app quits as soon as I press CMD.

Debug profile

* App version: 4.6.0 * App preferences: * NSStatusItem Preferred Position Item-0: 388 * NSWindow Frame com.sindresorhus.Preferences.FrameAutosaveName: 1491 479 549 551 0 0 2560 1417 * SUHasLaunchedBefore: 1 * SULastCheckTime: 2020-07-20 13:47:19 +0000 * holdShortcut: ⌘ * preferencesVersion: 4.6.0 * theme: 0 * Applications: 115 * Windows: 0 * OS version: Version 10.15.6 (Build 19G73) * OS architecture: x86_64 * Locale: en_NL (current) * Spaces: 2 * Dark mode: Light * "Displays have separate Spaces": checked * Hardware model: iMac19,1 * Screens: 1 * {x: 0.0, y: 0.0, width: 2560.0, height: 1440.0} * CPU model: Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz * Memory size: 34,36 GB * Active CPU count: 6 * Current CPU frequency: 3.0 Ghz * Resource utilization: * CPU: 0.0% * Memory: 54M+ * Threads count: 13

[lwouis]

Hi!

Could you please provide a little more information? That would help understand and investigate the issue.

So you remapped the default shortcut to cmd-tab instead of alt-tab, then when you press cmd it crashes? Or did you keep the default shortcut?

Could you please share the crash report?

Open Console.app, search for AltTab in the Crash Report section:

Right-click on the line for the crash you want to share, then "Reveal in Finder":

You can then share the file here. I suggest compressing it into a .zip first

[distrob]

Hi, yes I've remapped the shortcut keys. Attached is my crash report. Thanks!

AltTab_2020-07-20-152500_iMac.crash.zip

[lwouis]

Hi @distrob! Thanks for sharing the crash report. I'll look at it now.

Note that you unchecked the "Send debug report" checkbox when you sent your original message. That report is very useful for us to investigate the issue. It would have told us for example: which version of AltTab you are running (maybe the issue is already fixed in a more recent version), which customizations you used for the shortcuts, which macOS version you are running (some issues only happen in older macOS versions), etc.

If you can, please use the Feedback form again, and keep the checkbox checked this time. I'll merge the 2 tickets, but that way we have the debug profile here to facilitate the investigation 👍

[distrob]

Ok, I've just sent a new one!

[distrob]

Any news on this?

[lwouis]

Hi @distrob! You can see the current investigation in the ticket linked just above your last comment. It is a deeply complex situation as it seems that some code crashes when run on a thread which is not the main thread. This is not at all documented by Apple, and I don't know how we should deal with this limitation as we relly on background threads to get a snappy/responsive UX in AltTab

[lwouis]

The next major release of AltTab will probably fix this as shortcuts will be back on the main thread (unfortunately)

[distrob]

It works super fine now, having updated to the latest release. Amazing app, thanks!