Application quits when clicked (Microsoft Teams only)
### Problem type
Crash or unexpected quit
### What happened?
MS Teams Application (only this app so far) quits (completely) and reopens after application icon clicked in the taskbar.
Started to happen after computer restart.
Happens with or without docking station.
Happens regardless of single/multiple monitor.
All other applications not affected.
### Steps to reproduce
1. Open MS Teams app.
2. Click on the app icon in the taskbar.
### How often does it happen?
Every time
### Support Diagnostics & Attachments
Mac Taskbar Support Diagnostics
Generated: 2026-08-12T19:52:53Z
Application
Version: 2.3
Bundle build: 2.3
Build type: release
System
macOS: Version 26.4.1 (Build 25E253)
OS build: 25E253
Architecture: arm64
Running under Rosetta: no
Permissions
Accessibility: yes
Screen Recording (Mac Taskbar): no
Layout
Taskbar orientation: bottom
Dock orientation: left
Dock auto-hide: yes
Fullscreen taskbar hiding: always enabled
Settings window open: yes
Settings window frame: x=111.0, y=1269.0, width=1040.0, height=732.0
Display software
DisplayLink Manager: installed, version 1.12.4, running: yes
Displays (serial numbers and persistent identifiers omitted)
Display 0: Built-in Retina Display
Runtime ID: 1
Built-in: yes
AppKit frame: x=0.0, y=0.0, width=1496.0, height=967.0
AppKit visible frame: x=0.0, y=0.0, width=1496.0, height=938.0
CoreGraphics bounds: x=0.0, y=0.0, width=1496.0, height=967.0
Scale: 2.0
Rotation: 0.0 degrees
Pixel mode: 2992x1934
Refresh rate: 120.0 Hz
Online/active/mirrored: yes/yes/no
Vendor/model: 0x00000610/0x0000A05F
Configured taskbar rows: 1
Display 1: DELL P2417H
Runtime ID: 2
Built-in: no
AppKit frame: x=-221.0, y=967.0, width=1920.0, height=1080.0
AppKit visible frame: x=-221.0, y=967.0, width=1920.0, height=1050.0
CoreGraphics bounds: x=-221.0, y=-1080.0, width=1920.0, height=1080.0
Scale: 1.0
Rotation: 0.0 degrees
Pixel mode: 1920x1080
Refresh rate: 60.0 Hz
Online/active/mirrored: yes/yes/no
Vendor/model: 0x000010AC/0x0000A0DC
Configured taskbar rows: 1
Settings (privacy-safe allowlist)
Taskbar size: Regular
Default taskbar rows: 1
Tile font size: 14
Taskbar style: Liquid Glass
Classic light theme: System (Light)
Classic dark theme: System (Dark)
Automatically use Classic dark theme: yes
Center tiles: no
Show minimized windows: yes
Pinned apps on every monitor: no
Pinned folders on every monitor: no
Combined apps on every monitor: no
Media controls enabled: yes
Excluded for privacy: license key, window titles, application lists, folder paths, display serial numbers, and full UserDefaults.
Imported source
Crash or unexpected quit
### What happened?
MS Teams Application (only this app so far) quits (completely) and reopens after application icon clicked in the taskbar.
Started to happen after computer restart.
Happens with or without docking station.
Happens regardless of single/multiple monitor.
All other applications not affected.
### Steps to reproduce
1. Open MS Teams app.
2. Click on the app icon in the taskbar.
### How often does it happen?
Every time
### Support Diagnostics & Attachments
Mac Taskbar Support Diagnostics
Generated: 2026-08-12T19:52:53Z
Application
Version: 2.3
Bundle build: 2.3
Build type: release
System
macOS: Version 26.4.1 (Build 25E253)
OS build: 25E253
Architecture: arm64
Running under Rosetta: no
Permissions
Accessibility: yes
Screen Recording (Mac Taskbar): no
Layout
Taskbar orientation: bottom
Dock orientation: left
Dock auto-hide: yes
Fullscreen taskbar hiding: always enabled
Settings window open: yes
Settings window frame: x=111.0, y=1269.0, width=1040.0, height=732.0
Display software
DisplayLink Manager: installed, version 1.12.4, running: yes
Displays (serial numbers and persistent identifiers omitted)
Display 0: Built-in Retina Display
Runtime ID: 1
Built-in: yes
AppKit frame: x=0.0, y=0.0, width=1496.0, height=967.0
AppKit visible frame: x=0.0, y=0.0, width=1496.0, height=938.0
CoreGraphics bounds: x=0.0, y=0.0, width=1496.0, height=967.0
Scale: 2.0
Rotation: 0.0 degrees
Pixel mode: 2992x1934
Refresh rate: 120.0 Hz
Online/active/mirrored: yes/yes/no
Vendor/model: 0x00000610/0x0000A05F
Configured taskbar rows: 1
Display 1: DELL P2417H
Runtime ID: 2
Built-in: no
AppKit frame: x=-221.0, y=967.0, width=1920.0, height=1080.0
AppKit visible frame: x=-221.0, y=967.0, width=1920.0, height=1050.0
CoreGraphics bounds: x=-221.0, y=-1080.0, width=1920.0, height=1080.0
Scale: 1.0
Rotation: 0.0 degrees
Pixel mode: 1920x1080
Refresh rate: 60.0 Hz
Online/active/mirrored: yes/yes/no
Vendor/model: 0x000010AC/0x0000A0DC
Configured taskbar rows: 1
Settings (privacy-safe allowlist)
Taskbar size: Regular
Default taskbar rows: 1
Tile font size: 14
Taskbar style: Liquid Glass
Classic light theme: System (Light)
Classic dark theme: System (Dark)
Automatically use Classic dark theme: yes
Center tiles: no
Show minimized windows: yes
Pinned apps on every monitor: no
Pinned folders on every monitor: no
Combined apps on every monitor: no
Media controls enabled: yes
Excluded for privacy: license key, window titles, application lists, folder paths, display serial numbers, and full UserDefaults.
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